The ontological arguments are unique in that they are the only arguments for God’s existence that use a priori reasoning. All ontological arguments are deductive arguments .
Versions of the ontological argument aim to deduce God’s existence from the definition of God. Thus, proponents of ontological arguments claim ‘God exists’ is an analytic truth .
“Hence, even the fool is convinced that something exists in the understanding, at least, than which nothing greater can be conceived. For, when he hears of this, he understands it. And whatever is understood, exists in the understanding. And assuredly that, than which nothing greater can be conceived, cannot exist in the understanding alone. For, suppose it exists in the understanding alone: then it can be conceived to exist in reality; which is greater. […] Hence, there is no doubt that there exists a being, than which nothing greater can be conceived, and it exists both in the understanding and in reality.” – St. Anselm, Proslogium , Chapter 2
Anselm of Canterbury (1033-1109) was the first to propose an ontological argument in his book Proslogium .
His argument can be summarised as:
In other words, imagine two beings:
Which being is greater? Presumably, the second one – because it is greater to exist in reality than in the mind.
Since God is a being that we cannot imagine to be greater, this description better fits the second option (the one that exists) than the first.
Descartes offers his own version of the ontological argument:
This argument is very similar to Anselm’s , except it uses the concept of a perfect being rather than a being greater than which cannot be conceived .
Descartes argues this shows that ‘God does not exist’ is a self-contradiction . Hume uses this claim as the basis for his objection to the ontological argument.
Gaunilo of Marmoutiers (994-1083) argues that if Anselm’s argument is valid, then anything can be defined into existence. For example:
The conclusion of this argument is obviously false.
Gaunilo argues that if Anselm’s argument were valid, then we could define anything into existence – the perfect shoe, the perfect tree, the perfect book, etc.
The ontological argument reasons from the definition of God that God must exist. This would make ‘God exists’ an analytic truth (or what Hume would call a relation of ideas , as the analytic/synthetic distinction wasn’t made until years later).
The denial of an analytic truth/relation of ideas leads to a contradiction. For example, “there is a triangle with 4 sides” is a contradiction.
Contradictions cannot be coherently conceived . If you try to imagine a 4-sided triangle, you’ll either imagine a square or a triangle. The idea of a 4-sided triangle doesn’t make sense.
So, is “God does not exist” a contradiction? Descartes (and Anselm) certainly thought so.
But Hume argues against this claim. Anything we can conceive of as existent , he says, we can also conceive of as non-existent . This shows that “God exists” cannot be an analytic truth/relation of ideas, and so ontological arguments must fail somewhere.
A summary of Hume’s argument can be stated as:
Kant argues that existence is not a property (predicate) of things in the same way, say, green is a property of grass .
To say something exists doesn’t add anything to the concept of it.
Imagine a unicorn. Then imagine a unicorn that exists . What’s the difference between the two ideas? Nothing! Adding existence to the idea of a unicorn doesn’t make unicorns suddenly exist.
When someone says “God exists”, they don’t mean “there is a God and he has the property of existence”. If they did, then when someone says “God does not exist”, they’d mean, “there is a God and he has the property of non existence” – which doesn’t make sense!
Instead, what people mean when they say “God exists” is that “God exists in the world” . This cannot be argued from the definition of God and could only be proved via ( a posteriori ) experience. Thus the ontological argument fails to prove God’s (actual) existence.
Kant’s objection to the ontological argument is generally considered to be the most powerful argument against it.
So, in response, some philosophers have developed alternate versions that avoid this criticism.
Malcolm accepts that Descartes and Anselm (at least as presented above) are wrong.
Instead, Malcolm argues that it’s not existence that is a perfection, but the logical impossibility of non-existence ( necessary existence , in other words).
This (necessary existence) is a predicate, so avoids Kant’s argument above. Malcolm’s ontological argument is as follows:
Malcolm’s argument essentially boils down to:
Possible response:
We may respond to point 8, as discussed in the concept of God section , that the concept of God is self-contradictory.
Alternatively, we may argue that the meaning of “necessary” changes between premise 4 and the conclusion (10) and thus Malcolm’s argument is invalid. In premise 4, Malcolm is talking about necessary existence in the sense of a property that something does or does not have. By the conclusion, Malcolm is talking about necessary existence in the sense that it is a necessary truth that God exists. But this is not the same thing. We can accept that if God exists , then God has the property of necessary existence, but deny the conclusion that God exists necessarily.
The teleological arguments are also known as arguments from design.
These arguments aim to show that certain features of nature or the laws of nature are so perfect that they must have been designed by a designer – God.
In Dialogues Concerning Natural Religion , Hume considers a version of the teleological argument (through the character Cleanthes ), which he goes on to reject (through the character of Philo ).
“The curious adapting of means to ends, throughout all nature, resembles exactly, though it much exceeds, the productions of human contrivance; of human designs, thought, wisdom, and intelligence. Since, therefore, the effects resemble each other, we are led to infer, by all the rules of analogy, that the causes also resemble; and that the Author of Nature is somewhat similar to the mind of man, though possessed of much larger faculties, proportioned to the grandeur of the work which he has executed. By this argument a posteriori , and by this argument alone, do we prove at once the existence of a Deity, and his similarity to human mind and intelligence.” – Hume, Dialogues Concerning Natural Religion, Part 2
Hume’s argument here draws an analogy between things designed by humans and nature:
William Paley (1743-1805) wasn’t the first to propose a teleological argument for the existence of God, but his version is perhaps the most famous.
The reason for this is that a watch, unlike the stone, has many parts organised for a purpose. Paley says this is the hallmark of design:
“When we come to inspect the watch, we perceive (what we could not discover in the stone) that its several parts are framed and put together for a purpose , e.g. that they are so formed and adjusted as to produce motion, and that motion so regulated as to point out the hour of the day.” – William Paley, Natural Theology, Chapter 1
Nature and aspects of nature, such as the human eye, are composed of many parts. These parts are organised for a purpose – in the case of the eye, to see .
So, like the watch, nature has the hallmarks of design – but “ with the difference, on the side of nature, of being greater and more” . And for something to be designed, it must have an equally impressive designer .
Paley says this designer is God.
Hume (as the character Philo) points out various problems with the analogy between the design of human-made objects and nature, such as:
An argument from analogy is only as strong as the similarities between the two things being compared (nature and human designs). These differences weaken the jump from human-made items being designed to the whole universe being designed.
Hume (as the character Philo) argues that although there are examples of order within nature (which suggests design), there is also much “vice and misery and disorder” in the world (which is evidence against design).
If God really did design the world, Hume argues, there wouldn’t be such disorder. For example:
These features are examples of spatial dis order – features that wouldn’t make sense to include if you designed the universe.
Hume argues that such examples of disorder show that the universe isn’t designed. Or, if the universe is designed, then the designer is neither omnipotent nor omnibenevolent (as God is claimed to be).
Hume famously argues that we never experience causation – only the ‘constant conjunction’ of one event following another. If this happens enough times, we infer that A causes B.
For example, experience (ever since you were a baby) tells you that if one snooker ball hits another (A), the second snooker ball will move (B). You don’t actually experience A causing B, but it’s reasonable to expect this relationship to hold in the future because you’ve seen it and similar examples hundreds of times.
But imagine that you take a sip of tea and at the same time your friend coughs. Would it be reasonable to infer that drinking the tea caused your friend to cough based on this one instance? Obviously not. The point is: You cannot infer causation from a single instance.
Applying this to teleological arguments, Hume (as the character Philo) argues that the creation of the universe was a unique event – we only have experience of this one universe. And so, like the tea example, we can’t infer a causal relationship between designer and creation based on just one instance.
“Instead of supposing matter to be infinite, as Epicurus did, let us suppose it to be finite and also suppose space to be finite, while still supposing time to be infinite. A finite number of particles in a finite space can have only a finite number of transpositions; and in an infinitely long period of time every possible order or position of particles must occur an infinite number of times.” – Hume, Dialogues Concerning Natural Religion, Part 8
Hume’s objection here assumes the following:
Given these assumptions, it is inevitable that matter will organise itself into combinations that appear to be designed.
It’s a bit like the monkeys and typewriters thought experiment:
Given an infinite amount of time, a monkey will eventually type the complete works of Shakespeare.
This is the nature of infinity. It’s inevitable that the monkey will write something that appears to be intelligent, even though it’s just hitting letters at random.
The same principle applies to the teleological argument, argues Hume: Given enough time, it is inevitable that matter will arrange itself into combinations that appear to be designed , even though they’re not.
Charles Darwin’s (1809-1882) theory of evolution by natural selection explains how complex organisms – complete with parts organised for a purpose – can emerge from nature without a designer.
The key idea is that – given enough time and genetic mutations – it is inevitable that animals and plants will adapt to their environment, thus creating the appearance of design.
This directly undermines Paley’s claim that anything that has parts organised to serve a purpose must be designed.
Swinburne’s version of the teleological argument distinguishes between:
Swinburne accepts that science, for example evolution , can explain the apparent design of things like the human eye (i.e. spatial order) and so Paley’s teleological argument does not succeed in proving God’s existence. However, Swinburne argues, we can’t explain the laws of nature (i.e. temporal order) in the same way.
For example, the law of gravity is such that it allows galaxies to form, and planets to form within these galaxies, and life to form on these planets. But if gravity had the opposite effect – it repelled matter, say – then life would never be able to form. If gravity was even slightly stronger, planets wouldn’t be able to form. So how do we explain why these laws are the way they are?
Unlike spatial order, we can’t give a scientific explanation of why the laws of nature are as they are. Science can explain and predict things using these laws – but it has to first assume these laws. Science can’t explain why these laws are the way they are. In the absence of a scientific explanation of the laws of nature, Swinburne argues, the best explanation of temporal order is a personal explanation.
We give personal explanations of things all the time – for example, ‘this sentence exists because I chose to write it’ or ‘that building exists because someone designed and built it’. Swinburne argues that, by analogy, we can explain the laws of nature (i.e. temporal order) in a similarly personal way: The laws of nature are the way they are because someone designed them.
In the absence of a scientific explanation of temporal order, Swinburne argues, the best explanation is the personal one: The laws of nature were designed by God .
Hume’s earlier argument (finite matter, infinite time) can be adapted to respond to Swinburne’s teleological argument.
But instead of arguing that time is infinite, as Hume does, we could argue that the number of universes is infinite.
This idea of multiple universes is popular among some physicists, as it explains various phenomena in quantum mechanics.
But anyway, if there are an infinite number of universes (or even just a large enough number), it is likely that some of these universes will have laws of nature (temporal order) that support the formation of life. Of course, when such universes do exist, it is just sheer luck. If each universe has randomly different scientific laws, there will also be many universes where the temporal order does not support life.
Both Hume and Kant have argued that even if the teleological argument succeeded in proving the existence of a designer , this designer would not necessarily be God (as defined in the Concept of God section).
For example:
The Kalam argument is perhaps the simplest version of the cosmological argument in the A level philosophy syllabus. It says:
St. Thomas Aquinas (1225-1274) gave five different versions of the cosmological argument. A level philosophy requires you to know these three:
Argument from causation.
Aquinas’ first way is the argument from motion .
“It is certain, and evident to our senses, that in the world some things are in motion… It is [impossible that something] should be both mover and moved, i.e. that it should move itself. Therefore, whatever is in motion must be put in motion by another. If that by which it is put in motion be itself put in motion, then this also must needs be put in motion by another, and that by another again. But this cannot go on to infinity, because then there would be no first mover, and, consequently, no other mover; seeing that subsequent movers move only inasmuch as they are put in motion by the first mover… Therefore it is necessary to arrive at a first mover, put in motion by no other; and this everyone understands to be God.” – Aquinas, Summa Theologica , Part 1 Question 2
A summary of this argument:
Aquinas’ second way – the argument from causation – is basically the same as the argument from motion, except it talks about a first cause rather than a first mover:
Aquinas’ third way relies on a distinction between necessary and contingent existence. It’s a similar distinction to necessary and contingent truth from the epistemology module.
Things that exist contingently are things that might not have existed.
For example, the tree in the field wouldn’t exist if someone hadn’t planted the seed years ago. So, the tree exists contingently. Its existence is contingent on someone planting the seed.
So, using this idea of contingent existence, Aquinas argues that:
Descartes’ version of the cosmological argument is a lot more long-winded than the Kalam argument or any of Aquinas’ .
The key points are along these lines:
Note: This is another cosmological argument from contingency , like Aquinas’ third way above
Leibniz’s argument is premised on his principle of sufficient reason. The principle of sufficient reason says that every truth has an explanation of why it is the case (even if we can’t know this explanation).
Leibniz then defines two different types of truth:
The sufficient reason for truths of reasoning (i.e. analytic truths) is revealed by analysis. When you analyse and understand “3+3=6”, for example, you don’t need a further explanation why it is true.
But it is more difficult to provide sufficient reason for truths of fact (i.e. contingent truths) because you can always provide more detail via more contingent truths. For example, you can explain the existence of a tree by saying someone planted a seed. But you could then ask why the person planted the seed, or why seeds exist in the first place, or why the laws of physics are the way they are, and so on. This process of providing contingent reasons for contingent facts goes on forever.
“Therefore, the sufficient or ultimate reason must needs be outside of the sequence or series of these details of contingencies, however infinite they may be.” – Leibniz, Monadology , Section 37
So, to escape this endless cycle of contingent facts and provide sufficient reason for truths of fact (i.e. contingent truths), we need to step outside the sequence of contingent facts and appeal to a necessary substance. This necessary substance is God , Leibniz says.
Most of the cosmological arguments assume something along the lines of ‘there can’t be an infinite chain of causes’ (except the cosmological arguments from contingency ). For example, they say stuff like there must have been a first cause or a prime mover .
But we can respond by rejecting this claim. Why must there be a first cause? Perhaps there is just be an infinite chain of causes stretching back forever.
Another assumption (or premise) of many of the cosmological arguments above (not so much the contingency ones) is something like ‘everything has a cause’.
But Hume’s fork can be used to question this claim that ‘everything has a cause’:
Further, in the specific case of the creation of the universe, we only ever experience event B (i.e. the continued existence of the universe) and never what came before (i.e. the thing that caused the universe to exist).
This all casts doubt on the premise of cosmological arguments that ‘everything has a cause’.
Bertrand Russell argues that cosmological arguments fall foul of the fallacy of composition . The fallacy of composition is an invalid inference that because parts of something have a certain property, the entire thing must also have this property. Examples:
Applying this to the cosmological argument, we can raise a similar objection to Hume’s above : just because everything within the universe has a cause, doesn’t guarantee that the universe itself has a cause.
Or, to apply it to Leibniz’s cosmological argument : just because everything within the universe requires sufficient reason to explain its existence, doesn’t mean the universe itself requires sufficient reason to explain its existence. Russell says: “the universe is just there, and that’s all.”
Aquinas’ first and second ways and the Kalam argument only show that there is a first cause . But they don’t show that this first cause is God .
So, even if we accept that there was a first cause, it doesn’t necessarily follow that God exists – much less the specific being described in the concept of God .
So, even if the cosmological argument is sound, it doesn’t necessarily follow that God exists.
This objection doesn’t work so well against Descartes’ version because he specifically reasons that there is a first cause and that this first cause is an omnipotent and omniscient God .
Similarly, you could argue that any being that exists necessarily (such as follows from Aquinas’ third way and Leibniz’s cosmological argument ) would be God.
The problem of evil uses the existence of evil in the world to argue that God (as defined in the concept of God ) does not exist.
These arguments can be divided into two forms:
And evil can be divided into two types of evil:
evil | evil |
Evil acts committed by | Suffering as a result of |
E.g. torture, murder, genocide, etc. | E.g. earthquakes, tsunamis, volcano eruptions, etc. |
One final definition: a theodicy is an explanation of why an omnipotent and omniscient God would permit evil.
“Epicurus’s old questions have still not been answered. Is he willing to prevent evil, but not able? Then he is impotent. Is he able, but not willing? Then he is malevolent. Is he both able and willing? Then where does evil come from?” – Hume, Dialogues Concerning Natural Religion, Part 10
Inconsistent triad.
The simple version of Mackie’s argument is that the following statements are logically inconsistent – i.e. one or more of them contradict each other:
Mackie’s argument is that, logically, a maximum of 2 of these 3 statements can be true but not all 3. This is sometimes referred to as the inconsistent triad .
He argues that if God is omnibenevolent then he wants to stop evil. And if God is omnipotent, then he’s powerful enough to prevent evil.
But evil does exist in the world. People steal, get murdered, and so on. So either God isn’t powerful enough to stop evil, doesn’t want to stop evil, or both.
In the concept of God , God is defined as an omnipotent and omnibenevolent being. If such a being existed, argues Mackie, then evil would not exist. But evil does exist. Therefore, there is no omnipotent and omnibenevolent being. Therefore, God does not exist.
People often make claims like “you can’t appreciate the good times without experiencing some bad times”.
This is basically what this reply says: without evil, good couldn’t exist.
Mackie’s response
Mackie questions whether this statement is true at all. Why can’t we have good without evil?
Imagine if we lived in a world where everything was red. Presumably, we wouldn’t have created a word for ‘red’, nor would we know what it meant if someone tried to explain it to us. But it would still be the case that everything is red, we just wouldn’t know.
It’s a similar story with good and evil.
God could have created a world in which there was no evil. Like the red example, we wouldn’t have the concept of evil. But it would still be the case that everything is good – we just wouldn’t be aware of it.
You could develop reply 1 above to argue that some evil is necessary for certain types of good. For example, you couldn’t be courageous (good) without having to overcome fear of pain, death, etc. (evil).
We can define first and second order goods:
The argument is that second order goods seek to maximise first order goods. And second order goods are more valuable than first order goods. But without first order evils, second order goods couldn’t exist.
Let’s say we accept that first order evil is necessary for second order good to exist. How do you explain second order evil ?
Second order evils seek to maximise first order evils such as pain. So, for example, malevolence or cruelty are examples of second order evils.
But we could still have a world in which people were courageous (second order good) in overcoming pain (first order evil) without these second order evils. So why would an omnipotent and omnibenevolent God allow the existence of second order evils if there is no greater good in doing so?
We can develop the second order evil argument above further and argue that second order evil is necessary for free will. And free will is inherently such a good and valuable thing that it outweighs the bad that results from people abusing free will to do evil things.
So, while allowing free will brings some suffering, the net good of having free will is greater than if we didn’t. Therefore, it’s logically possible that an omnipotent and omnibenevolent God would allow evil (both first order and second order) for the greater good of free will.
In other words, there is a logically possible world with both free will and without second order evils.
This, surely, would be the best of both worlds and maximise good most effectively: you would have second order goods, plus the good of free will, but without second order evils. This is a logically possible world – the logically possible world with the most good.
So, why wouldn’t an omnipotent and omniscient God create this specific world? Second order evils do not seem logically necessary, and yet they exist.
Plantinga argues that we don’t necessarily need a plausible theodicy to defeat the logical problem of evil. All we need to show is that the existence of evil is not logically inconsistent with an omnipotent and omnibelevolent God.
So, even if the explanation of why God would allow evil doesn’t seem particularly plausible, as long as it’s a logical possibility then we have defeated the logical problem of evil .
(The free will theodicy is also known as the Augustinian theodicy after St. Augustine).
Even Mackie himself admits that God’s existence is not logically incompatible with some evil (first order evil). But his argument is that second order evil isn’t necessary .
Plantinga argues, however, that it’s logically possible (which is all we need to show to defeat the logical problem of evil) that God would allow second order evil for the greater good of free will . His argument is as follows:
In short, this argument shows that it’s at least logically possible that God would allow second order evil for the greater good of significant freedom.
Perhaps God could have created the world where everyone chose to only do morally good actions ( as Mackie describes above ) – but such a world wouldn’t be significantly free. Free will is inherently good and so significant free will could outweigh the negative of people using that significant free will to commit second order evils.
The free will defence above explains why an omnipotent and omnibenevolent God would allow moral evil. But it doesn’t explain natural evil.
When innocent people are killed in natural disasters, it doesn’t seem this is the result of free will. So, even if an omnipotent and omnibenevolent God would allow moral evil, why does this kind of evil exist as well?
Plantinga argues that it’s possible natural evil is the result of non-human actors such as Satan, fallen angels, demons, etc. This would make natural evil another form of moral evil, the existence of which would be explained by free will.
Even if this doesn’t sound very plausible , it’s at least possible . And remember, Plantinga’s argument is that we only need to show evil is not logically inconsistent with God’s existence to defeat the logical problem of evil.
The Irenaean theodicy below (what Hick calls soul-making) can also serve as a possible explanation of why God allows evil: We need evils in order to overcome them and freely develop spiritual virtues.
Unlike the logical problem of evil , the evidential problem of evil can allow that God’s existence is possible .
However, it argues the amount and distribution of evil in the world provides good evidence that God probably doesn’t exist.
We can reject the logical problem of evil and accept that God would allow some evil. But would an omnipotent and omnibenevolent God allow so much evil? And to people so undeserving of it?
The evidential problem of evil argues that if God did exist, there would be less evil and it would be less concentrated among those undeserving of it.
Sure, God could have made a world with less evil. But this would mean less free will. And on balance, having free will creates more good than the evil it also creates.
OK, maybe God would allow some evil for the greater good of free will. But it seems possible – simple, even – that God could have created a world with less evil than our world without sacrificing the greater good of free will.
For example, our world exactly as it is, with the same amount of free will, but with 1% less cancer. God could have created this world, so why didn’t He?
The evidential problem of evil could insist that the amount of evil – or unfair ways it is distributed – could easily be reduced without sacrificing some greater good, and so it seems unlikely that God exists, in this world, given this particular distribution of evil.
Soul making.
(The soul making theodicy is also known as the Irenaean theodicy after St. Irenaeus).
Hick argues that humans are unfinished beings. Part of our purpose in life is to develop personally, ethically and spiritually – he calls this ‘soul making’.
As discussed above , it would be impossible for people to display (second order) virtues such as courage without fear of (first order) evils such as pain or death. Similarly, we couldn’t learn virtues such as forgiveness if people never treated us wrongly.
Of course, God could just have given us these virtues right off the bat. But, Hick says, virtues acquired through hard work and discipline are “good in a richer and more valuable sense”. Plus, there are some virtues, such as a genuine and authentic love of God, that cannot simply be given (otherwise they wouldn’t be genuine).
Soul making explains why God might allow some evil – i.e. it deals with the logical problem of evil. But there are some evils that don’t seem necessary for soul-making, such as pointless evils or animal suffering , and so the evidential problem remains. Hick’s responses are as follows:
The evidential problem of evil can ask Hick why God would allow animals to suffer when there is no benefit. After all, animals can’t develop spiritually like we can, so what greater good does their suffering serve?
Hick’s response is that God wanted to create epistemic distance between himself and humanity – i.e. a world in which his existence could be doubted . If God just proved he existed, we wouldn’t be free to develop a relationship with him. Also, we wouldn’t choose to do good for its own sake – we might just do good in expectation of being rewarded by God.
If animals didn’t exist or humans were clearly differentiated from animals, then it would be obvious that humans existed as part of a divine plan. However, humanity’s similarity with animals provides an alternative account of our existence that doesn’t require God (e.g. via evolution ) and thus creates epistemic distance where God’s existence can be doubted.
We might still ask why would God allow such terrible evils – e.g. torturing a baby or mass murder – when we could still achieve spiritual development with lesser evils?
Hick argues that it’s not possible for God to just get rid of terrible evil – e.g. baby torture – and leave only ordinary evil. The reason for this is that terrible evils are only terrible in contrast to ordinary evils. So, if God did get rid of terrible evils, then the worst ordinary evils would become the new terrible evils. If God kept getting rid of terrible evils then he would have to keep reducing free will and thus the development of personal and spiritual virtues ( soul making ).
Finally, we might ask why would God allow such pointless evils – e.g. an innocent child struck down with cancer at a young age.
Hick argues that such pointless evils must remain something of a mystery. But, paradoxically, this mystery actually helps the case for soul making: If every time we saw someone suffering we knew it was for some higher purpose (i.e. it wasn’t pointless), then we would never be able to develop virtues such as deep sympathy.
“It seems, then, that in a world that is to be the scene of compassionate love and self-giving for others, suffering must fall upon mankind with something of the haphazardness and inequity that we now experience. It must be apparently unmerited, pointless, and incapable of being morally rationalized. For it is precisely this feature… that creates sympathy between man and man and evokes the unselfish kindness and goodwill which are among the highest values of personal life.” – John Hick, Evil and the God of Love, Chapter 16 Part 6
Further, without seemingly unfair and pointless evil, we would never be able to develop virtues such as hope and faith – both of which require a degree of uncertainty. This again comes back to God maintaining epistemic distance and creating a world where his existence can be doubted.
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On proofs for the existence of god: aristotle, avicenna, and thomas aquinas.
2. aristotle’s cosmological proof for the first mover, 3. avicenna’s metaphysical proof for necessary existence in itself, 4. thomas aquinas’s cosmological proof for the existence of god, 5. conclusions, institutional review board statement, informed consent statement, data availability statement, conflicts of interest.
1 | . Γ2, 1003a33-1003b19. I subscribe to the “focus-meaning” interpretation proposed by some interpreters; see ( , ) and ( ). |
2 | . B1, 995b13-15, 995b31-36; B2, 997a34-b3; Z2, 1028b27-32; M1, 1076a10-13), Aristotle asks whether there is a kind of substance other than sensible substance, i.e., intelligible substance. He rejects two possible answers by criticizing Plato’s ideas and classifying mathematical entities as quantities. The only intelligible substance that Aristotle truly recognizes is God. I will explain this point in due course. |
3 | . E1, 1026a27-29; K7, 1064b9-11; PA A1, 641a34-36. |
4 | . Ε1, 1026a29-31; Z11, 1037a13-17; K7, 1064b11-14; M1, 1076a8-15; Phys. B2, 194b9-15; PA A1, 641a36-b4. |
5 | . Λ1, 1069a36-b2; Λ10, 1075b130-14; K2, 1060a27-31. |
6 | . Λ1, 1069a30-36, Aristotle speaks of the three kinds of substances (οὐσίαι δὲ τρεῖς, 1069a30), natural things, heavenly bodies, and God. Aristotle is precise and correct in stating that natural things such as (human beings), animals, and plants are sensible and perishable substances (1069a30-32). However, the (four) elements appear in place of the heavenly bodies, representing sensible and imperishable substances (1069a32-33), and the ideas and mathematical entities appear in place of God, representing intelligible and immovable substances (1069a33-36). According to Aristotle’s doctrine of categories, mathematical entities are not substances, but belong to the category of quantity. Aristotle sharply criticizes Plato’s ideas and does not recognize them as substances. Although they are intelligible and immovable, Plato’s ideas and mathematical entities are not substances in the Aristotelian sense, so they should not appear here. Although he recognizes the four elements as substances in On Generation and Corruption, Aristotle does not discuss them in Metaphysics Λ, so they should not appear here. In this case, one might ask why Aristotle mentions the elements in Λ1, which he does not discuss here, and speaks of Plato’s ideas and mathematical entities, which he does not consider substances. I suppose that Aristotle introduces these into his discussion of substances because he uses the doxographical method. In order to express his own doctrine, Aristotle presents the doctrine proposed by pre-Aristotelian philosophers and argues with them. To present the doctrine of the four causes, in Metaph. A, Aristotle goes through all the pre-Socratics, Socrates and Plato, who discuss the related issues. Similarly, in Metaph. Λ, Aristotle refers to the pre-Aristotelian doctrines of substances, although he disagrees with some of them, in order to present his own doctrine of substances. After introducing the three kinds of substances in Λ1, Aristotle discusses them one by one. He presents natural things as sensible and perishable substances in Λ2-5, heavenly bodies as sensible and imperishable substances in Λ6-8, and God as intelligent and immovable substance in Λ6-9. In particular, in Λ6-8 Aristotle presents God as the First Unmoved Mover by relating Him to the moved heavenly bodies, and in Λ9 he presents God as a purely intelligent entity. Finally, Aristotle summarizes the relationships among these three kinds of substances in Λ10. Thus, in terms of the overall structure and content of Book Λ, Aristotle discusses the three kinds of substances: natural things, heavenly bodies, and God. For Aristotle’s discussion of these three substances, see also ( ). |
7 | . Γ2, 1003b17-19; Λ1, 1069a25-26. See also ( ). |
8 | ( ). |
9 | . A1, 184a18-21; A5, 188b30-33, 189a4-9; APo. A1, 71b33-72a5; De An. B2, 413a11-13; Metaph. Δ11, 1018b29-34; Z3, 1029b3-12; NE A2, 1095a30-b4. See also ( ). |
10 | . Λ8, 1073b17-1074a14. ( ) thinks there are fifty-five heavenly bodies, while ( ) think there are ninety-four. I will not enter into this discussion here, because what is important for the cosmological proof is that there are many heavenly bodies, not one, and that there are finitely many, not infinitely many. |
11 | . Θ5, 256a13-14; H1, 242a49-50. |
12 | |
13 | . Λ7, 1072a24-26; Phys. Θ5, 256a4-21; H1, 242a49-66. |
14 | 686. 2–16. |
15 | ( ): “Furthermore, says Theophrastus, if heaven is living like other living beings, its movement could be explained by the action of its soul, and would not need any unmovable mover.” |
16 | . Λ8, 1074a36-37; Phys. Θ5, 256a13-21; H1, 242a49-55. |
17 | ( ). |
18 | . Λ7, 1072b18-30; Λ9, 1074b38-1075a10. |
19 | . Λ10, 1075a11-25; ( ). |
20 | I.6-7. Some scholars question the traditional interpretation and suggest that Avicenna does not prove God’s existence until Ilāhīyyāt VIII.1-3 ( ; ; , ). |
21 | ; ), while others see it as metaphysical ( ; ). |
22 | ; ) characterize Avicenna’s proof as ontological, I prefer to present it as metaphysical, so that Avicenna’s metaphysical proof is not confused with Anselm’s ontological proof. |
23 | , (2014, pp. 48–49); ( ). |
24 | ( ): “Was Metaphysik von Gott erkennen kann, vermag sie nach Aristoteles nur im Ausgang von den Wirkungen zu erkennen. Ein solcher Leitfaden erlaubt aber nur eine Erkenntnis Gottes per accidens.” |
25 | . A6, 74b5-12, 75a12-14, 75a28-31; A7, 75a38-b6; A8, 75b21-24; A9, 76a4-15; A10, 76b11-16. |
26 | I.5, p. 22, lines 19-22. I refer to Marmura’s and Bertolacci’s translation with slight modification. |
27 | I.5, p. 22, lines 19-22; p. 23, lines 15–17; see also ( ). |
28 | ( ): “As the fact of occurring at the very beginning of the Ilāhīyyāt witnesses, the articulation of Ontology constitutes, according to Avicenna, the main axis of metaphysics.” |
29 | , Aquinas defines metaphysics from three perspectives and gives it three names. Metaphysics is called first philosophy, which examines the primary causes of things; metaphysics is also called divine science or theology, which examines the intelligent being, completely separated from matter, both in reality and in the mind; and metaphysics is finally called transphysics, which examines the universal principles, being and its essential properties, such as one–many and potency–actualization (Metaphysica, inquantum considerat ens et ea quae consequuntur ipsum. Haec enim transphysica inveniuntur in via resolutionis, sicut magis communia post minus communia. [...] Unde et illa scientia maxime est intellectualis, quae circa principia maxime universalia versatur. Quae quidem sunt ens, et ea quae consequuntur ens, ut unum et multa, potentia et actus). In my opinion, Aquinas inherits the ontological conception of metaphysics from Avicenna, while he inherits the theological and aitiological conceptions of metaphysics from Aristotle. |
30 | . A4, 73b16-21; A10, 76b3-16; Avicenna, Ilāhīyyāt I.3; ( ; ). |
31 | ( ) does not call Avicenna’s division diairesis, and I interpret his description and summary of Avicenna’s division as diairesis. |
32 | (al-Samā’al-ṭabī’ī, 2009, p. 39), Avicenna classifies power (quwwa, potentia, δύναμις) into four types ( ). I believe that Avicenna establishes the fourfold classification by means of cross-division. Avicenna constructs the cross-division by cross-combining the two pairs of attributes, i.e., single function–multiple function and without volition–with volition, with each other. The cross-combination of the two pairs of attributes results in the four pairs of combinations that characterize four kinds of things endowed with a certain power: the natural thing is single-function and acts without volition, the celestial soul is single-function and acts with volition, the vegetative soul is multifunction and acts without volition, and the animal soul is multifunction and acts with volition. I would also note that Lammer has also mentioned another cross-division made by Themistius, Philoponus, and al-Fārābī, such that the two pairs of attributes, i.e., relative–absolute and hypothesis–postulate, are cross-combined. In this way, the fourfold classification is established: relative hypotheses, relative postulates, absolute hypotheses, and absolute postulates ( ). Moreover, I observe that in Ilāhīyyāt I.2, Avicenna uses cross-division to divide mathematics into four subdisciplines and the subject of mathematics into four kinds. The subject of mathematics, quantity, is divided into two parallel pairs, continuous–discrete and abstraction from matter–existence in matter, and the two pairs are cross-combined, thus forming a cross-division that establishes four pairs of combinations that characterize four kinds of quantity. Through this cross-division, quantity, the subject of mathematics, is divided into four kinds, and accordingly, mathematics is divided into four subdisciplines as follows. Geometry studies the quantity that is continuous and abstract from matter (i.e., lines, surfaces, and bodies); astronomy studies the quantity that is continuous and exists in matter (i.e., heavenly bodies); arithmetic studies the quantity that is discrete and abstract from matter (i.e., numbers); and music studies the quantity that is discrete and exists in matter (i.e., notes). Based on what has been said, it is reasonable to assume that in Ilāhīyyāt I.6, Avicenna uses cross-division to make a fourfold classification of existent. Notably, Avicenna did not invent cross-division. Plato and Aristotle used cross-division extensively; in his commentary on Aristotle’s Categories, Porphyry notes Aristotle’s use of cross-division and calls it chiasmus (χιαστή). See ( ) Porphyrii Isagoge et In Aristotelis Categorias Commentarium, 78.34-79.11; ( ). For Plato’s and Aristotle’s use of chiasmus and a detailed discussion of the difference between chiasmus and diairesis, see ( ). |
33 | ( ), ( ) and ( ). |
34 | ( ): “Avicenna defends (...) that metaphysics can have a theological goal precisely because it has an ontological starting point”. |
35 | ( ), ( ), ( ), ( ) and ( ). |
36 | ) but rather that something moved must be moved by something (ὑπό τινος). Although Aristotle’s aim is to infer an external mover from the moved heavenly bodies, his formulation and the possible use of κινεῖσθαι in the sense of medium indicate that Aristotle does not completely exclude the internal efficient cause and emphasize the external efficient cause, as Aquinas does. Thus, there is a slight difference between Aquinas’s imitation and Aristotle’s original formulation, although this difference does not affect the argument. |
37 | . Γ1, 201a10-11). In other words, motion is defined as the process from potentiality to actuality. At the beginning, the thing exists in potentiality, and motion does not begin; at the end, the thing achieves its goal and exists in actuality, and motion ends. Movement is neither beginning nor end, neither potentiality nor actuality, but the process from beginning to end and from potentiality to actuality. From the perspective of movement, it is illuminating that potentiality and actuality cannot coexist simultaneously. According to Aristotle, however, not only can moving and being moved coexist, but they must operate simultaneously for movement to occur (Phys. Γ3, 202a21-b5). For example, the moving hand and the moved stick operate simultaneously to lift the stick. The same reasoning applies to the movement of animals: the moving soul and the moved body work simultaneously for a human being to act. When there is movement, the moving and the moved work together at the same time. Therefore, I think the two sets, potentiality–actuality and moving–being moved, cannot be confused with each other. |
38 | I, c. 13 bears much resemblance to the argument established by Proclus in the Elements of Theology (abbreviated ET). In the seventeenth proposition, Proclus argues, “But if the mover is one part and the moved another, the whole will not in itself be self-moved, since it will be composed of parts that are not self-moved: it will have the appearance of being self-moved, but in essence it will not be so” (ET, Prop. 17. lines 5-8). I have slightly modified Dodd’s translation. |
39 | . Λ3, 1070a7-8; Phys. B1, 192b8-15, 27–30. |
40 | c. 3 (1999, p. 60): Causas autem accipit tam pro extrinsecis quam pro intrinsecis: Materia et forma dicuntur intrinsecae rei, eo quod sunt partes constituentes rem; efficiens et finalis dicuntur extrinsecae, quia sunt extra rem. |
41 | ( ; ) emphasizes that in the second way, Aquinas places the hierarchical, vertical structure among the efficient causes in order to avoid infinite regression. ( ) further asserts that “all the proofs presume that the causes and effects appearing in them are arranged hierarchically”. Pasnau takes up this idea by claiming that in each of the five ways, Aquinas replaces the infinite horizontal series of causes going back in time with a vertical series, thus ending the infinite regression. See ( ) and ( ). |
42 | ( ) also questions the validity of this deduction. |
43 | ( ), ( ) and ( ). |
44 | ( ) and ( ). |
45 | 254b-260a. |
46 | . 595c-597e; Tim. 27c-31b, 39e-40d. |
47 | ) “Via causalitatis; via negationis; via eminentiae (Weg der Ursächlichkeit; Weg der Negation; Weg des Übermaßes)”, in Historisches Wörterbuch der Philosophie, pp. 1034–38. |
48 | , Prop. 8. lines 3-4: “If all beings desire the Good, it is evident that the First Good transcends [all] beings” (εἰ γὰρ πάντα τὰ ὄντα τοῦ ἀγαθοῦ ἐφίεται, δῆλον ὅτι τὸ πρώτως ἀγαθὸν ἐπέκεινά ἐστι τῶν ὄντων). I have slightly modified Dodds’s translation. |
49 | |
50 | ( ) focuses on the first way, ( ) on the first and fourth ways. According to Wippel and Pawl, many scholars focus on the third way; see ( ) and ( ). |
51 | , ( ) summarizes the last two features common to the five ways as one characteristic by stating that “a second characteristic is that all the proofs presume that the causes and effects appearing in them are arranged hierarchically”. In other words, the second common feature is both causality and the hierarchical order between cause and effect. ( ) emphasizes the hierarchical order between cause and effect because only the hierarchy can end the infinite regression. |
52 | q. 7, a. 7; SCG I, c. 29-36.; ST I, q. 13, a. 5-6. For an interpretation of Aquinas’s analogy, see ( ), ( ), ( ), ( ), ( ), ( ), and ( ). |
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Liu, X. On Proofs for the Existence of God: Aristotle, Avicenna, and Thomas Aquinas. Religions 2024 , 15 , 235. https://doi.org/10.3390/rel15020235
Liu X. On Proofs for the Existence of God: Aristotle, Avicenna, and Thomas Aquinas. Religions . 2024; 15(2):235. https://doi.org/10.3390/rel15020235
Liu, Xin. 2024. "On Proofs for the Existence of God: Aristotle, Avicenna, and Thomas Aquinas" Religions 15, no. 2: 235. https://doi.org/10.3390/rel15020235
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The existence of God has been a big subject in philosophy, and attempts to prove or disprove his existence have been made since time immemorial. Famous philosophers such as Rene Descartes, St. Thomas Aquinas, and William Paley have all conceived arguments to prove the existence of God. Although there are many other arguments trying to prove the existence of God, nevertheless, the arguments proposed by the three above-mentioned thinkers have the most significance in philosophy. This essay is going to provide two arguments for the existence of God.
The anthropic principle is an argument of the existence of a reasonable plan for the structure of the Universe. According to this argument, only God may create the complex structure of nature, universe, and life on the Earth. Such phenomena as a fixed distance of Earth from the Sun, the presence of the Earth’s rotation, the existence of a satellite of certain sizes, minerals and resources could be created only under the control of someone mighty.
The cosmological proof of the existence of God was developed by the ancients (in particular, by Aristotle) and is most often found in the following form. Everything in the world and everything, the entire universe as a whole, has a reason for its existence. Furthermore, the argument states that it is impossible to continue this sequence, the chain of causes indefinitely – somewhere there must be a root cause that is already no other is conditioned (Reichenbach, 2022). Otherwise, everything turns out to be groundless, hanging in the air.
Finally, the transcendental proof of the existence of an ideal world and God was partially discovered by Kant and can be presented as follows. There is a world outside of space and time – the spiritual world, the world of intelligence, thought, and free will, which is proved by the presence in every person of thoughts. According to the argument, this world can relate to the past and the future, that is, ‘travel’ into the past and the future, as well as being instantly transported to any point in space.
Reichenbach, Bruce. (2022). Cosmological Argument. The Stanford Encyclopedia of Philosophy (2022 Edition), Edward N. Zalta (ed.). Web.
IvyPanda. (2023, July 22). The Existence of God: Key Arguments. https://ivypanda.com/essays/the-existence-of-god-key-arguments/
"The Existence of God: Key Arguments." IvyPanda , 22 July 2023, ivypanda.com/essays/the-existence-of-god-key-arguments/.
IvyPanda . (2023) 'The Existence of God: Key Arguments'. 22 July.
IvyPanda . 2023. "The Existence of God: Key Arguments." July 22, 2023. https://ivypanda.com/essays/the-existence-of-god-key-arguments/.
1. IvyPanda . "The Existence of God: Key Arguments." July 22, 2023. https://ivypanda.com/essays/the-existence-of-god-key-arguments/.
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IvyPanda . "The Existence of God: Key Arguments." July 22, 2023. https://ivypanda.com/essays/the-existence-of-god-key-arguments/.
Cite this chapter.
Part of the book series: Handbook of Contemporary Philosophy of Religion ((HCPR,volume 3))
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Theism is characterized by belief in a God that possesses a unique set of characteristics or attributes. The theistic conception of God that is formed by the combination of these attributes has been troublesome through the centuries and has given rise to many questions and criticisms — by theists and nontheists alike — both of the individual attributes and the collective set of attributes. These problems persisted throughout the twentieth century and intensified in the last few decades. Some of the issues concerning the attributes are old ones revisited in light of our changing knowledge of the natural world as a result of the development of science. Others are logical issues that have been given new “twists” by contemporary scholars, quite independently of contingent matters. The coherence of the attributes that comprise the concept of God is fundamental to theism since the viability of theism must begin with the viability of the concept of God. Sorting through the difficulties surrounding the traditional attributes of the theistic deity is such a fundamental problem that Richard Swinburne devotes approximately two-thirds of what many consider his seminal work, The Coherence of Theism , to an explanation and defense of the coherence of these attributes. Although there are many disagreements among theists that need to be explored, I shall take Swinburne’s view as typical of the traditional theistic concept of God: namely, “that there exists eternally an omnipresent spirit, free, creator of the universe, omnipotent, omniscient, perfectly good, and a source of moral obligation.” 1
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Richard Swinburne, The Coherence of Theism , Revised Edition (Oxford: Clarendon Press, 1993), p. 99.
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I do not treat here the work of Charles Hartshorne, since his view of the divine attributes is so intimately connected with his process philosophy. See his Man’s Vision of God and the Logic of Theism (New York: Harper and Row, 1941) and The Divine Relativity: A Social Conception of God (New Haven, Conn.: Yale University Press, 1948).
Several of the exchanges have taken place in Philosophical Studies . See Richard LaCroix, “The Impossibility of Defining Omnipotence,” Philosophical Studies , Vol. 32, 1977, pp. 181–90; George Mavrodes, “Defining Omnipotence,” Philosophical Studies , Vol. 32, 1977, pp. 191–202; Richard LaCroix, “Failing to Define Omnipotence,” Philosophical Studies , Vol. 35, 1979, pp. 219–22; Joshua Hoffman, “Mavrodes on Defining Omnipotence,” Philosophical Studies , Vol. 35, 1979, pp. 311–15; and Bruce Reichenbach, “Mavrodes on Omnipotence,” Philosophical Studies , Vol. 37, 1980, pp. 211–14. Also see Anthony Kenny, The God of the Philosophers (Oxford: Clarendon Press, 1979), Chapter Vil; Stephen T. Davis, Logic and the Nature of God (Grand Rapids, Mich.: Eerdmans, 1983), Chapter 5; and Edward R. Wierenga, The Nature of God (Ithaca, N.Y.: Cornell University Press, 1989), Chapter 1. For Alvin Plantinga’s notion of omnipotence, see the discussion of his modal version of the ontological argument below.
Edward. R. Wierenga provides a summary and discussion of the different versions of the different qualifications in The Nature of God , p. 14–18.
Wade C. Savage, “The Paradox of the Stone,” Philosophical Review , Vol. 76, 1967.
In addition to the responses discussed here, see Alvin Plantinga, God and Other Minds (Ithaca, N.Y.: Cornell University Press, 1967), pp. 168–73; Peter Geach, “Omnipotence,” Philosophy , Vol. 48, 1973, reprinted as Chapter 1 of Providence and Evil (Cambridge: Cambridge University Press, 1977); and G. B. Keene, “A Simpler Solution to the Paradox of Omnipotence,” Mind , Vol. 69, 1960. For a critical discussion of different responses to the paradox of the stone, see Stephen T. Davis, Logic and the Nature of God (Grand Rapids, Mich.: Eerdmans, 1983), Chapter 5.
George Mavrodes, “Some Puzzles Concerning Omnipotence,” Philosophical Review , 72, 1963, pp. 221–23. Reprinted in Philosophy of Religion: Selected Readings , edited by Michael Peterson et al. (Oxford: Oxford University Press, 1996), to which the page numbers here refer, p. 113.
lbid., p. 114.
Richard Swinburne, The Coherence of Theism , p. 158.
Harry Frankfurt, “The Logic of Omnipotence,” The Philosophical Review , Vol. 73, 1964, pp. 26263. Reprinted in Philosophy of Religion: An Anthology , edited by Louis Pojman (Belmont, Calif.: Wadsworth, 1998), to which the page numbers here refer.
Ibid., p. 282.
Richard Swinburne, The Coherence of Theism , p. 156.
Ibid., p. 161. For a discussion of temporal considerations in the notion of omnipotence as well as a distinction concerning different levels of omnipotence (“first-order” and “second-order” omnipotence), see J. L. Mackie, “Evil and Omnipotence,” Mind , Vol. 64, 1955, pp. 200–12.
There are other considerations involved here as well. For example, powers are sometimes distinguished from attributes that are distinguished from relations. I maintain that powers and attributes can best be analyzed in terms of relations, though I have not argued for this position here.
The terminology is sometimes confusing here since some scholars refer to the paradox of the stone as the paradox of omnipotence. I use the two different designations here to try and maintain the distinction between the two problems.
Originally in J. L. Mackie, “Evil and Omnipotence,” Mind , Vol. 64, 1955. Also in J. L. Mackie, The Miracle of Theism (Oxford: The Clarendon Press, 1982), pp. 160ff.
There has been some discussion of whether this is a genuine paradox or simply a difficult issue that forces a certain response from a theist depending upon whether or not God may have second-order omnipotence without ever exercising it. See Mackie, The Miracle of Theism , p. 160.
Ibid., pp. 161–62. Alvin Plantinga’s free will defense and Mackie’s criticisms are discussed at length in Chapter VI.
Anthony Kenny, The God of the Philosophers , pp. 94–95.
Ibid., p. 96.
Ibid., pp. 97–98. There are other difficulties that cause further qualifications as well. Although God may possess the power to beget a son, he cannot possess the power to beget my son, and although God might possess the power to write a book, he cannot possess the power to write the book that I write.
See Richard Swinburne, “Tensed Facts,” American Philosophical Quarterly , Vol. 27, 1990, pp. 117–30.
Norman Kretzmann, “Omniscience and Immutability,” Journal of Philosophy , Vol. 63, 1966.
For responses to Kretzmann, see Nector-Neri Castaneda, “Omniscience and Indexical Reference,” Journal of Philosophy , Vol. 64, 1967, pp. 203–210, and Swinbume, The Coherence of Theism , 167–72. Castafieda argues that there is a propositional content to indexicals that can be known by other people, but Swinburne denies this.
Nelson Pike, “Divine Omniscience and Voluntary Action,” Philosophical Review , Vol. 74, 1965, pp. 27–46. Reprinted in Philosophy of Religion: Selected Readings , edited by Michael Peterson, William Hasker, Bruce Reichenbach, and David Bassinger (Oxford: Oxford University Press, 1996) to which the page numbers here refer, pp.117–18.
See Anthony Kenny, “Divine Foreknowledge and Human Freedom,” in Aquinas: A Collection of Critical Essays , edited by Anthony Kenny (Garden City, N.Y.: Anchor Books, 1969), pp. 255–270, as well as The God of the Philosophers , Chapter V.
Richard Swinburne, The Coherence of Theism , pp. 179–83.
Ibid., pp. 180–81.
See Harry Frankfurt, “Alternative Possibilities and Moral Responsibility,” Journal of Philosophy , Vol. 66, 1969, pp. 829–39. For a discussion of Frankfurt’s attack on PAP and various responses as well as a defense of PAP, see Laura Waddell Ekstrom, Free Will: A Philosophical Defense (Boulder, Colo.: Westview Press, 1999).
See Linda Zagzebski, “Foreknowledge and Human Freedom,” in A Companion to Philosophy of Religion , edited by Philip L. Quinn and Charles Taliaferro (Oxford: Blackwell Publishers, 1997), pp. 294–96. Zagzebski accepts Frankfurt’s rejection of PAP but argues that PAP is not the important issue for the problem of divine foreknowledge.
Marilyn Adams, “Is the Existence of God a Hard Fact?” Philosophical Review , Vol. 76, 1967; Joshua Hoffman, “Pike on Possible Worlds, Divine Foreknowledge, and Human Freedom,” Philosophical Review , Vol. 88, 1979; Anthony Kenny, The God of the Philosophers , pp. 51–87; John Martin Fischer, “Freedom and Foreknowledge,” Philosophical Review , Vol. 92, 1983; Joshua Hoffman and Gary Rosenkrantz, “Hard and Soft Facts,” Philosophical Review , Vol. 93, 1984; William P. Alston, “Divine Foreknowledge and Alternative Conceptions of Human Freedom,” International Journal for Philosophy of Religion , Vol. 18, no. 1, 1985.
For a thorough discussion of William of Ockham and the contemporary Ockhamists, see Linda Trinkaus Zagzebski, The Dilemma of Freedom and Foreknowledge (Oxford: Oxford University Press, 1991), Chapter 3.
This summary is a synthesis of the treatments found in Zagzebski, ibid ., pp. 68–70, and Marilyn Adams, William Ockham (Notre Dame, Ind.: University of Notre Dame Press, 1987), Chapter 27.
Zagzebski, The Dilemma of Freedom and Foreknowledge , p. 18.
Nelson Pike, “Of God and Freedom: A Rejoinder,” Philosophical Review , Vol. 75, 1966, pp. 36979; John Turk Saunders, “Of God and Freedom,” Philosophical Review , Vol. 75, 1966, pp. 219–225; and Marilyn Adams, “Is the Existence of God a Hard Fact?”
Marilyn Adams, ibid ., pp. 493 and 494.
William L. Rowe, Philosophy of Religion: An Introduction (Belmont, Calif.: Wadsworth, 1978), p.163. [Though the war between Japan and the United States ended in 1945 and lasted four years, I use Rowe’s original example to be true to his text.]
For example, Alvin Plantinga, “On Ockham’s Way Out,” Faith and Philosophy , Vol. 3, no. 3, July 1986, pp. 235–69.
John Martin Fischer, “Introduction: God and Freedom,” in God , Foreknowledge , and Freedom , edited by John Martin Fischer (Stanford, Calif.: Stanford University Press, 1989), pp. 35–36. Also see Fischer’s “Freedom and Foreknowledge” (Chapter 4) in the same volume, originally published in The Philosophical Review , Vol. 92, no. 1, 1983, pp. 67–79. For a response to Fischer, see Joshua Hoffman and Gary Rosenkrantz, “Hard and Soft Facts,” The Philosophical Review , Vol. 93, no. 3, 1984, pp. 41934, which is reprinted also in God , Foreknowledge , and Freedom , Chapter 7.
Zabzebski, The Dilemma of Freedom and Foreknowledge , pp. 74–76.
William Hasker, God , Time , and Knowledge (Ithaca, N.Y.: Cornell University Press, 1989), pp.75–95.
I am here assuming that not all facts about God are soft simply because God is eternal.
See Alvin Plantinga, The Nature of Necessity (Oxford: Oxford University Press, 1974), Chapter 9, and Alfred Freddoso’s Introduction in On Divine Foreknowledge: Part IV of the Concordia , Luis de Molina (Ithaca, N.Y.: Cornell University Press, 1988).
Alvin Plantinga, God , Freedom , and Evil (New York: Harper & Row, 1974), pp. 66–73.
For a critical discussion of these criticisms, see Zabzebski, The Dilemma of Freedom and Foreknowledge , pp. 141ff.
William Hasker, God , Time , and Knowledge , pp. 39–52. For a lengthy response to Hasker and a defense of Plantinga, see Edward R. Wierenga, The Nature of God , pp. 150–160. Anthony Kenny also attacks Plantinga’s notion of middle knowledge in The God of the Philosophers , pp. 67ff.
Eleonore Stump and Norman Kretzmann, “Eternity,” Journal of Philosophy , Vol. 78, 1981. Reprinted in The Concept of God , edited by Thomas V. Morris (Oxford: Oxford University Press, 1987). p. 247.
Others have rejected this way of resolving the dilemma Kenny calls the timelessness of God “incoherent” while Swinburne denies that timelessness is consistent with other theistic beliefs about God.
Anthony Kenny, The God of the Philosophers (Oxford: Oxford University Press, 1979), pp. 38-
Eleonore Stump and Norman Kretzmann, “Eternity,” Journal of Philosophy Vol. 78, 1981, pp. 429–58. The pages numbers here refer to the reprint in The Concept of God edited by Thomas V. Morris (Oxford: Oxford University Press, 1987), pp. 231.
For a critical discussion of the relationship of timelessness to these attributes, see Nelson Pike, God and Timelessness (New York: Schocken Books, 1970), Chapter 3, and Richard Swinburne, The Coherence of Theism (Oxford: Clarendon Press, 1993), pp. 219ff.
Stump and Kretzmann, ibid ., p. 247.
Zagzebski, The Dilemma of Freedom and Foreknowledge , p. 41ff.
Hasker, God , Time , and Knowledge , p. 164.
Much of the following is drawn from James F. Harris, “An Empirical Understanding of Eternality,” International Journal for Philosophy of Religion , Vol. 22, 1987, pp. 165–83.
William James, Principles of Psychology (New York: Henry Holt, 1893), Vol. IV, p. 606.
See Harris, “An Empirical Understanding of Eternality,” for more detailed discussion of the limits of the specious present, pp. 177ff.
Nelson Pike, God and Timelessness , Chapter 7.
Swinburne, The Coherence of Theism , p. 228.
Using this distinction is more helpful, I think, than using “the Cambridge Criterion” introduced by Peter Geach, “What Actually Exists,” Proceedings of the Aristotelian Society, Supplemental Volume, Vol. 42, 1968, pp. 7–16.
It should be noted that several have criticized and rejected this distinction.
For a discussion of the notion that God has eternal intentions, see Swinburne, The Coherence of Theism , pp. 221–22.
Dun Scotus notwithstanding. Although Scotus held that the incarnation was intended by God from all eternity and not as a result of original sin, this certainly has never been and is not now the dominant view.
Richard Swinburne, The Coherence of Theism , pp. 217ff; Nicholas Wolterstorff, “God Everlasting,” God and the Good: Essays in Honor of Henry Stob , edited by C. Orlebeke and L. Smedes (Grand Rapids, Mich.: Eerdmans, 1975), pp. 181–203. Reprinted in Philosophy of Religion: Selected Readings , edited by Michael Peterson et al., pp. 125–33; Stephen T. Davis, “Temporal Eternity,” from Logic and the Nature of God (Grand Rapids, Mich.: Eerdmans, 1983). Reprinted in Philosophy of Religion: An Anthology , edited by Louis Pojman (Belmont, Calif.: Wadsworth, 1998), pp. 235–42. Page references to both Wolterstorff and Davis refer to the reprinted versions.
Wolterstorff, “God Everlasting,” pp. 125–26.
Davis, “Temporal Eternity,” pp. 237ff.
If this is true, one might wonder why Aquinas, Boethius, and others have taken God to be timeless. To this question I have no definite answer, but Swinburne’s suggestion that attributing timelessness to God in Christian theology resulted from neo-Platonism seems very plausible. See Swinbume, The Coherence of Theism ,p. 225.
For a critical discussion of the history of impassibility (which focuses on Augustine and the Stoics) and its relation to the other divine attributes, see Nicholas Wolterstorff, “Suffering Love,” in Philosophy and the Christian Faith , edited by Thomas V. Morris (Notre Dame, Ind.: University of Notre Dame Press, 1988), pp. 196–237.
See Richard Creel, “Immutability and Impassibility,” in A Companion to Philosophy of Religion , edited by Philip L. Quinn and Charles Taliaferro (Oxford: Blackwell Publishers, 1997), pp. 313ff, for a short discussion of impassibility and the other attributes of God. Also see, Nicholas Wolterstorff, “Suffering Love,” pp. 217ff.
Richard Creel, Divine Impassibility (Cambridge: Cambridge University Press, 1986), p. 2.
Jung Young Lee, God Suffers for Us: A Systematic Inquiry into a Concept of Divine Passibility (The Hague: Martinus Nijhoff, 1974), p. 7. Lee is also quoted by Creel, ibid .
For a detailed discussion of different definitions and a critical survey of the literature, see Richard Creel, Divine Impassibility , pp. 3ff.
Richard Creel, “Immutability and Impassibility,” p. 313.
Nicholas Wolterstorff, “Suffering Love,” p. 211. Charles Taliaferro also develops a theory of passibility in Consciousness and the Mind of God (Cambridge: Cambridge University Press, 1994), pp. 315–33. I do not discuss his theory of passibility here, but I do discuss his theory of integrated dualism in some detail below.
Ibid., pp. 214–15 and pp. 224ff.
Nicholas Wolterstorff, “Suffering Love,” in Philosophy and the Christian Faith , edited by Thomas V. Morris, pp. 196–237, and Lament for a Son (Grand Rapids, Mich.: Eerdmans Publishing Co., 1987).
Wolterstorff, Lament for a Son , pp. 80 and 81.
Richard Creel, Divine Impassibility , Chapters 2 and 7. Also see Kelly James Clark, “Hold Not Thy Peace at My Tears,” in Our Knowledge of God , edited by Kelly James Clark (Dordrecht, Netherlands: Kluwer Academic Publishers, 1992), pp. 173ff.
Many critics have objected that the claims about the personhood of God which have become so thoroughly ingrained in traditional theism are the confused result of a complete misunderstanding of the nature of persons originating in Cartesian dualism. Such criticism is found in Kai Nielsen, “God, Disembodied Existence and Incoherence,” Sophia , Vol. 26, no. 3, 1987, and Richard Rorty, “Mind as Ineffable,” in Mind in Nature , edited by Richard Q. Elvee (San Francisco: Macmillan, 1973). The most thorough discussion of the matter of dualism and its effect upon the traditional theistic conception of God is found in Charles Taliaferro, Consciousness and the Mind of God (Cambridge: Cambridge University Press, 1994).
Richard Swinburne, The Coherence of Theism , Chapter 8.
Ibid., pp. 104ff. and p. 135. Derived from Arthur Danto, “Basic Actions,” American Philosophical Quarterly , Vol. 2, 1965, pp. 141–48.
Swinburne, ibid ., p. 141.
Swinburne argues that such a notion is meaningful. See ibid ., pp. 106ff. This issue is discussed in the context of the issue of immortality in Chapter VII.
Ibid., p. 105.
Ibid., p. 106.
William P. Alston, “God’s Action in the World,” in Evolution and Creation , edited by Ernan McMullin (Notre Dame, hid.: University of Notre Dame Press, 1986). Reprinted in William P. Alston, Divine Nature and Human Language: Essays in Philosophical Theology (Ithaca, N.Y.: Cornell University Press, 1989), to which the page numbers here refer, p. 198.
Ibid., pp. 199–207. Also see J. L. Mackie, The Miracle of Theism , pp. 161ff.
Alston, “God’s Action in the World,” p. 207.
Harry Frankfurt, “Alternative Possibilities and Moral Responsibility,” Journal of Philosophy , Vol. 66, 1969, pp. 829–39.
Whether Frankfurt is right about the effect of this type of case on PAP and whether moral responsibility depends upon PAP have been the subject of some debate in the literature on free will. Peter van Inwagen, for example, agrees with Frankfurt that these cases show that PAP is false in An Essay on Free Will (Oxford: Clarendon Press, 1983), pp. 179–80, while Laura Ekstrom disagrees in Free Will: A Philosophical Study (Boulder, Colo.: Westview Press, 1999), Chapter 6.
One fairly recent such example is Gary Legenhausen, “Is God a Person?” Religious Studies , Vol. 22, 1986, pp. 307–23.
Grace Jantzen, God’s World , God’s Body (Philadelphia, Pa.: The Westminster Press, 1984), Chapter 5.
For a critical (but ultimately negative) assessment of the different theological supports for incorporeality, see Jantzen, God’s World , God’s Body ,pp. 105–130. See also David Paulsen, “Must God Be Incorporeal?” Faith and Philosophy , Vol. 6, no. 1, 1989, pp. 76–87. For a rebuttal to Jantzen and Paulsen, see Charles Taliaferro, Consciousness and the Mind of God , pp. 256–71.
For criticism of Jantzen on this score, see Taliaferro, ibid .,pp. 249ff., especially his note on p. 249 for further references.
Charles Taliaferro, Consciousness and the Mind of God .
Ibid., pp. 233–34.
Richard Swinburne, The Coherence of Theism , pp. 101ff.
Patrick Sherry, “Spirits , Saints , and Immortality (Albany, N.Y.: State University of New York Press, 1984), p. 13. For a lengthy response to Sherry’s objection, see Taliaferro, ibid .,pp. 264ff.
Taliaferro, Consciousness and the Mind of God ,p. 266.
This issue is discussed at length in Chapter VII. Using some kind of replica body theory might help integrated dualism answer this question.
Taliaferro, Consciousness and the Mind of God ,pp. 335–36.
Taliaferro’s integrated dualism seems somewhat akin to Alfred North Whitehead’s consequent nature of God — a kinship that can only be noted here.
Alvin Plantinga, God and Other Minds (Ithaca, N.Y.: Cornell University Press, 1967), pp. 29ff. 704 Ibid . p. 27.
It should be noted that Kant raises a number of different objections to the ontological argument, of which “existence is not a predicate” is just one. For a full discussion of Kant’s different objections, see Plantinga, ibid ., pp. 29ff., and J. L. Mackie, The Miracle of Theism , pp. 43ff.
Plantinga, God and Other Minds , pp. 30–31.
Immanuel Kant, Critique of Pure Reason , translated by Norman Kemp Smith (London: Macmillan, 1963).
Mackie, The Miracle of Theism , p. 46. Mackie follows W. C. Kneale on this point. See W. C. Kneale, “Is Existence a Predicate?” in Readings in Philosophical Analysis , edited by Herbert Feigl and Wilfrid Sellars (New York: Appleton-Century-Croft, 1949).
Mackie, ibid ., pp. 46–47.
Plantinga, God and Other Minds , p. 32.
Some would say, following Quine, that the ontological question of what “really” exists is nonsensical and is replaced by the question of the ontological commitment of a particular language.
Ibid., p. 47.
Graham Oppy, Ontological Arguments and Belief in God (Cambridge: Cambridge University Press, 1995), pp. 33ff. This volume contains the most complete annotated bibliography on the ontological argument available, pp. 200ff.
Mackie, The Miracle of Theism , pp. 42–43. This is a modern-day version of Gaunilo’s objection that a perfect island would necessarily have to exist.
Oppy, Ontological Arguments and Belief in God , pp. 48–49.
For further discussion of the issue of whether existence can be a predicate, see the articles by Bertrand Russell and Jerome Shaffer in The Many-Faced Argument , edited by John Hick and Arthur McGill (London: Macmillan, 1968), pp. 219–45.
For example, a version of the ontological argument that is now receiving some attention is the one that was found in the unpublished papers of Kurt Gödel. Gödel’s original version appears in his Collected Works , Volume 3, edited by S. Feferman et al. (Oxford: Oxford University Press, 1995). For critical comments, see C. Anthony Anderson, “Some Emendations of Gödel’s Ontological Argument,” Faith and Philosophy , Vol. 7, 1990, pp. 291–303; Graham Oppy, “Gödelian Ontological Arguments,” Analysis , Vol. 56, 1996, pp. 226–30; and C. Anthony Anderson and Michael Gettings, “Gödel’s Ontological Proof Revisited,” in Lecture Notes in Logic 6: Gödel ‘86 , edited by Petr Hhjek (New York: Springer-Verlag, 1996), pp. 167–72.
Charles Hartshorne, “The Necessarily Existent,” in Man’s Vision of God (New York: Harper and Row, 1941), pp. 229–341. Page numbers refer to reprint in The Ontological Argument , edited by Alvin Plantinga (Garden City, N.Y.: Anchor Books, 1965); The Logic of Perfection (LaSalle, ID.: Open Court, 1962); and Anselm’s Discovery (LaSalle, Ill.: Open Court, 1965). Norman Malcolm, “Anselm’s Ontological Arguments,” Philosophical Review , Vol. 69, no. 1, January 1960. Reprinted in Malcolm’s Knowledge and Certainty (Englewood, Cliffs, N.J.: Prentice-Hall, 1963), to which the page numbers here refer.
Whether Anslem intended to present two different arguments in Chapter 3 or whether he intended to be exploring the attributes of the being whose existence he had established in Chapter 2 is an intriguing question of historical exegesis. However, the main substantive issue is not whether the modal version of the argument can be attributed to Anseem but whether a sound modal version of the argument can be formulated.
Hartshorne, The Logic of Perfection , p. 58.
Hartshorne, “The Necessarily Existent,” p. 124.
Ibid., p. 135.
See Hartshorne, The Logic of Perfection , pp. 50–51.
John Hick has objected that Anselm intended “necessary” to mean “ontological necessity” rather than “logical necessity.” See his “A Critique of the `Second Argument,”` in John Hick and Arthus C. McGill, The Many-Faced Argument (New York: Macmillan, 1967).
For an introduction to these modal systems, see G. E. Hughes and M. J. Creswell, An Introduction to Modal Logic (London: Methuen and Company, 1968).
Hartshorne, The Logic of Perfection , p. 60.
Ibid., p. 46.
See ibid., p. 63.
Ibid., pp. 63ff.
Hartshorne thinks that admitting potentiality in God for future concrete states actually strengthens the case for regarding God’s existence as necessary. See ibid ., pp. 63–68.
Norman Malcolm, “Anselm’s Ontological Arguments,” p. 146.
As with Hartshorne, there is significant controversy over Malcolm’s interpretation of Anselm. See, for example, Clement Dore, Theism (Dordrecht, Netherlands: D. Reidel, 1984), pp. 144ff.
Ibid ., pp. 149–50.
Richard Gale takes Malcolm to be offering two different versions of Anselm’s “second” proof, but it seems more likely that Malcolm intended his comments to be simply elaborations of a single modal proof. At any rate, the differences are not great. For Gale’s formalizations of Malcolm’s modal proof(s), see his On the Nature and Existence of God (Cambridge: Cambridge University Press, 1991), pp. 209ff. Compare Keith E. Yandell, Basic Issues in the Philosophy of Religion (Boston: Allyn and Bacon, Inc., 1971), pp. 101ff.
Norman Malcolm, “Anselm’s Ontological Arguments,” pp. 149 and 150.
For criticisms of Malcolm on this point, see W. Baumer, “Anse1m, Truth, and Necessary Being,” Philosophy , Vol. 37, 1962, pp. 257–58, and Terrence Penelhum, “Some Recent Discussions of the Traditional Proofs — The Ontological Argument,” in Religion and Rationality (New York: Random House, 1971), pp. 365–72. For discussion of other responses, see Oppy, Ontological Arguments and Belief in God , pp. 211–12.
While modality may apply to other attributes of God, I take “modally perfect being” as shorthand for perfection solely in terms of existence.
For a detailed treatment of the relationship between the ontological and cosmological arguments for Hartshorne, see H. G. Hubbeling, “Hartshorne and the Ontological Argument,” in The Philosophy of Charles Hartshorne , edited by Lewis Edwin Hahn (LaSalle, Ill.: Open Court, 1991), pp. 367ff.
Clement Dore, Theism , Chapter 6.
Norman Malcolm, “Anselm’s Ontological Arguments,” p. 159.
Dore, Theism , pp. 70ff.
Paul Henle, “Uses of the Ontological Argument,” Philosophical Review , Vol. 70, 1961, pp. 102ff.
For monotheists, it is crucial then to argue that there is one and only one necessarily existent being, a part of the argument that is frequently neglected. For a generalized version of Henle’s point, see R. Kane, “The Modal Ontological Argument,” Mind , Vol. 93, 1984, pp. 336–50. Kane shows that it is easy to use the modal argument to populate the universe with an infinite number of necessarily existent but slightly less than perfect beings. See Oppy, Ontological Arguments and Belief in God , pp. 171ff., for discussion of this development.
Dore, Theism , p. 74.
Ibid., pp. 74–75.
J. N. Findlay, “Can God’s Existence Be Disproved,” in New Essays in Philosophical Theology , edited by Antony Flew and Alasdair Maclntyre (London: SCM Press, 1955), pp. 47–75. This article is widely reprinted in different anthologies.
Ibid., p. 52.
Ibid., p. 54.
For a detailed and formalized treatment of Findlay’s disproof, see Bowman Clarke, “Modal Disproofs and Proofs for God,” Southern Journal of Philosophy , fall 1971, pp. 247–58. As Clarke notes, Findlay’s objection amounts to a modal extension of the Hume-Kant objection to Anselm’s version of the ontological argument.
See John Hick, “A Critique of the `Second Argument,”` p. 343.
See Alvin Plantinga, God and Other Minds , p. 174. Plantinga is correct that statements of mathematics are a priori for Kant, but they are not logically true in the sense that Malcolm and Hartshorne claim that “God exists” is logically true. While Kant’s distinction between analytic and synthetic statements does not map neatly onto contemporary uses of “necessarily true” and “logically true,” it seems that the modal versions of the ontological argument discussed so far would have us understand “God exists” as analytic a priori in the sense of analytic that depends upon essential predication. For further discussion, see Jerome Shaffer, “Existence, Predication, and the Ontological Argument,” in The Many-Faced Argument , edited by John Hick and Arthur McGill, pp. 244–45.
Alvin Plantinga, The Nature of Necessity (Oxford: Clarendon Press, 1974), p. 213. This claim of Plantinga’s is ambiguous. What Hartshorne and Malcolm have shown is that a being necessarily exists (exists in all possible worlds) and that this same being has perfection in at least one possible world. So we should understand Plantinga’s claim to mean that while a necessarily existing being exists in this actual world, this world may not be the one in which it has perfection. The following description of Plantinga’s argument follows pp. 214–217.
Ibid., pp. 213–14.
See ibid ., pp. 220–21.
Michael Tooley, “Plantinga’s Defence of the Ontological Argument,” Mind , Vol. 90, 1981, p. 424.
Ibid., p. 425–26.
Richard Gale, On the Nature and Existence of God , pp. 227–28. L60 Ibid ., p. 229.
J. L. Mackie, The Miracle of Theism , pp. 57ff.
For Plantinga’s discussion of world-indexed properties, see The Nature of Necessity ,pp. 62ff.
Edwards’s introduction to this section (pp. 372ff.) is particularly illuminating. The debate is also reprinted in The Existence of God , edited by John Hick (New York: Macmillan, 1964).
J. L. Mackie, The Miracle of Theism , p. 60.
Kant, of course, argued just the converse, namely, that the cosmological argument depends upon the ontological argument.
For various forms of the cosmological argument, see William L. Craig, The Cosmological Argument from Plato to Liebniz (London: Macmillan, 1980).
William L. Rowe, The Cosmological Argument (Princeton, N.J.: Princeton University Press, 1975), p. 7; Richard Gale, On the Nature and Existence of God , Chapter 7; J. L. Mackie, The Miracle of Theism , Chapter 5.
Bertrand Russell and F. C. Copleston, “The Existence of God — A Debate,” a 1948 program of the British Broadcasting Corporation, reprinted in A Modern Introduction to Philosophy , edited by Paul Edwards and Arthur Pap (New York: The Free Press, 1957), p. 473. Edwards’s introduction to this section (pp. 372ff.) is particularly illuminating. The debate is also reprinted in The Existence of God ,edited by John Hick (New York: Macmillan, 1964).
This is essentially the same point made by Ronald W. Hepburn, Christianity and Paradox (London: Watts Publishing, 1958), pp. 167–68.
See William L. Rowe, “Two Criticisms of the Cosmological Argument,” The Monist , Vol. 54, no. 3, 1970. Reprinted in Philosophy of Religion: Selected Readings , Third Edition, edited by William L. Rowe and William J. Wainwright (Fort Worth, Tex.: Harcourt Brace College Publishers, 1973). Page numbers refer to this reprint.
The most thorough discussion of PSR and examples of how different versions of the cosmological argument rely upon different versions of PSR are found in William L. Rowe, “The Cosmological Argument and the Principle of Sufficient Reason,” Man and World , Vol. 1, no. 2, 1968. Reprinted in William L. Rowe, The Cosmological Argument , pp. 60–114.
Compare J. L. Mackie, The Miracle of Theism , p. 82, and Rowe, ibid ., 145.
Bruce Reichenbach explicitly states the form of the PSR that he thinks the cosmological argument requires as one that says that all contingent beings require a sufficient explanation for their existence. See Bruce Reichenbach, The Cosmological Argument: A Reassessment (Springfield, Ill.: Charles C. Thomas, 1972), p. 68.
William L. Rowe, “Two Criticisms of the Cosmological Argument,” pp. 151ff.
Ibid., 152.
See William L. Rowe, The Cosmological Argument ,pp. 100–101.
There are other difficulties as well with Rowe’s defense of the PSR on this score. See Richard Gale, On the Existence and Nature of God , pp. 259ff.
Bruce Reichenbach, The Cosmological Argument: A Reassessment , p. 69, and J. L. Mackie, The Miracle of Theism , p. 85. Given Kant’s attack on the ontological argument, it is ironic that Reichenbach likens the PSR to the principle of causality and then gives a very Kantian defense of it.
Richard Swinburne, The Existence of God (Oxford: Oxford University Press, 1979), Chapter 7.
Ibid., p. 130.
Swinburne also develops an inductive version of the teleological argument for the existence of God. These probabilistic arguments, along with miracles and religious experience, are parts of Swinburne’s “cumulative case” for the existence of God.
See, for example, J. L. Mackie, The Miracle of Theism , pp. 95ff.
There are many scientific descriptions available of the big bang. The description here is a synthesis of the most commonly accepted current theories and draws primarily upon a popular college textbook for astronomy and cosmology, George Abell, David Morrison, and Sidney Wolff, Exploring the Universe, Fifth Edition, (Philadelphia, Pa.: Saunders College Publishing, 1987), Chapter 37, pp. 656–76. For a very lay-accessible account, see also James S. Trefil, The Moment of Creation (New York: Macmillan, 1983), Chapter 1. For descriptions of the big bang employed by philosophers of religion, see Quentin Smith, “The Uncaused Beginning of the Universe,” and “Atheism, Theism, and Big Bang Cosmology,” in Theism, Atheism, and Big Bang Cosmology, William Lang Craig and Quentin Smith (Oxford: Clarendon Press, 1993), and Kenneth Nelson, “Evolution and the Argument from Design,” Religious Studies, Vol. 14, 1978, pp. 427–28.
There are many explanations of this development for the layperson. A very popular recent source is Brain Greene, The Elegant Universe (New York: Vintage Books, 1999), pp. 82ff. Einstein later was to say that introducing the ad hoc adjustment to relativity theory to ensure a static universe was the biggest mistake of his life.
For a more detailed scientific description of the big bang, see Abell et al., Exploring the Universe, pp. 665ff. The version discussed here is what physicists call the “standard model” of the big bang.
An interesting point here involves the problem of the perspective of any theoretical observer that epistemologists (but probably not physicists) will find interesting. The common conception of the big bang where one imagines a bright flash of light in distant space will not work. Since all of the mass of the universe was contained in the original singularity, there was no “outside” to the big bang. The big bang occupied all of existing space and would have to be imagined more like a sudden bright flash of the entire visual field.
Abell et al., Exploring the Universe p. 247.
Planck time is named after Max Planck, who is credited with a major role in developing quantum theory.
Some physicists think that superstring theory is a candidate for a theory that will unify general relativity and quantum theory by piercing the Planck limit on the supermicroscopic level. However, even superstring theory is not proffered as a way of piercing the Planck limit in regards to the big bang. See Brian Greene, The Elegant Universe .
Stephen Hawking, `Breakdown of Predictability in Gravitational Collapse,“ Physical Review Vol. D14, 1976, p. 2460. Quoted by Quentin Smith in ”Atheism, Theism, and Big Bang Cosmology,“ in Theism, Atheism, and Big Bang Cosmology p. 198.
Paul Davies, The Edge of Infinity (New York: Simon and Schuster, 1981), p. 161.
For example, Stephen Hawking thinks that his oscillating view of the universe is preferable to the standard big bang model — in part, at least — because it has no beginning and thus, in contrast to the standard big bang model, does not leave a gap for the beginning of space-time, which allows an appeal to God. See Stephen Hawking, A Brief History of Time (New York, Bantam Books, 1988).
See William Lane Craig, The Kalâm Cosmological Argument (New York: Harper and Row, 1979), and “The Caused Beginning of the Universe,” in Theism, Atheism, and Big Bang Cosmology . Craig borrows the name “kalâm” for his version of the cosmological from the movement in Islam comparable to natural theology in the Western, Judeo-Christian tradition.
William Lane Craig, “Scientific Confirmation of the Cosmological Argument,” in Philosophy of Religion: An Anthology edited by Louis P. Pojman, pp. 38ff.
Ibid., p. 38.
Ibid., p. 39.
Paul Draper, “A Critique of the Kalâm Cosmological Argument,” in Louis P. Pojman, Philosophy of Religion: An Anthology edited by Louis P. Pojman, pp. 42–47.
Quentin Smith, “The Uncaused Beginning of the Universe,” in Theism, Atheism, and Big Bang Cosmology, p. 123. For a full discussion concerning the caused vs. uncaused — the theistic vs. the atheistic — interpretations of the big bang theory, which space here does not permit, see the exchange between Craig and Smith in Theism, Atheism, and Big Bang Cosmology.
Craig, “Scientific Confirmation of the Cosmological Argument,” p. 39.
For a more detailed treatment of the notion of an uncaused big bang, see Quentin Smith, “The Uncaused Beginning of the Universe,” pp. 125ff.
See above and Richard Swinburne, The Existence of God pp. 130–32.
See Smith, “The Uncaused Beginning of the Universe,” pp. 201–202. Compare Richard Swinburne, The Existence of God pp. 145–51.
Parallel issues involve the cosmological argument as well. See John D. Barrow and Frank J. Tipler, The Anthropic Cosmological Principle (Oxford: The Clarendon Press, 1986), especially section 2.9, pp. 103ff.
The coining of the phrase “the anthropic principle” is usually attributed to Brandon Carter in 1974.
Alfred Russel Wallace, Man’s Place in the Universe (New York: McClure, Phillips and Co., 1903).
See Brandon Carter, “The Anthropic Principle and Large Number Coincidences,” in Confrontation of Cosmological Theories with Observation edited by M. S. Longair (Dordecht, Netherlands: D. Reidel Publishers, 1974).
John D. Barrow and Frank J. Tipler, The Anthropic Cosmological Argument (Oxford: Oxford University Press, 1986), pp. 16ff. This book provides the most complete account of the anthropic principle available.
For example, it is claimed that if the rate of expansion of the universe had been reduced by one part in a million million, the universe would have collapsed upon itself. For a discussion of this and other such conditions, see John Leslie, “Anthropic Principle, World Ensemble, Design,” American Philosophical Quarterly Vol. 19, no. 2, 1982, pp. 141ff. See also Barrow and Tipler, ibid . pp. 288ff.
Barrow and Tipler, ibid . p. 21.
M. A. Corey, God and the New Cosmology: The Anthropic Design Argument (Lanham, Md.: Rowman and Littlefield Publishers, 1993), pp. 205–15. Corey gives significant weight to the fact that some scientists, such as Stephen Hawking and Paul Davies, allow for some notion of principle of design to account for the initial conditions of the universe. Compare Corey’s restrained comments about scientists with the exaggerated comments of William Craig, “Theism and Physical Cosmology,” in A Companion to Philosophy of Religion edited by Philip L. Quinn and Charles Taliaferro, p. 422.
Richard Swinbume, The Existence of God p. 138.
For further discussion of the probability of the set of initial conditions of the universe, see John Earman, “The SAP Also Rises: A Critical Examination of the Anthropic Principle,” American Philosophical Quarterly, Vol . 24, no. 4, 1987, pp. 309.
The notion of a world ensemble is now common and was first used by Brandon Carter, “The Anthropic Principle and Large Number Coincidences,” and G. Steigman, “Confrontation of Antimatter Cosmologies with Observational Data,” also in Confrontation of Cosmological Theories with Observational Data edited by M. S. Longair.
There are many discussions of the competing interpretations of quantum mechanics. For a very accessible account, see Paul Davies, Other Worlds (New York: Simon and Schuster, 1980), pp. 145ff. Also see M. A. Corey, God and the New Cosmology pp. 175ff. For a discussion of the less accepted many-worlds interpretation of Hugh Everett, according to which observers select the actual world in which they live by their presence from many actual worlds, see The Many-Worlds Interpretation of Quantum Mechanics edited by Bryce S. DeWitt and Neill Graham (Princeton, N.J.: Princeton University Press, 1973).
Corey recognizes that intelligent observers might be whales or dolphins or “human-like” creatures on other planets. M. A. Corey, God and the New Cosmology p. 7.
John Farman, “The SAP Also Rises: A Critical Examination of the Anthropic Principle,” pp. 308 and 313.
FAP was first formulated by Barrow and Tipler, The Anthropic Cosmological Principle p. 23. Their Ultimate Observer (p. 471) is reminiscent of Berkeley’s use of God as the Eternal Perceiver in his idealism. As a corollary to the effect of the observer in quantum physics, PAP was first suggested by John Wheeler, “Genesis and Observership,” in Foundational Problems in the Special Sciences edited by R. E. Butts and J. Hintikka (Dordrecht, Netherlands: Reidel, 1977). For discussions of FAP and PAP. see Earman, ibid . pp. 312ff., and Corey, ibid., pp. 3–4, 167–68, and 185–88. Ignored in much of the discussion is Wheeler’s disclaimer that PAP is “too frail” to withstand criticism and Barrow and Tipler’s disclaimer that FAP and SAP are “quite speculative.”
John Earman, ibid . p. 313.
Martin Gardner, “WAP, SAP, FAP, and PAP,” New York Review of Books Vol. 33, no. 8, 1986, Pp. 22–25.
See Earman, “The SAP Also Rises: A Critical Examination of the Anthropic Principle,” pp. 309 and 313ff., for a discussion of anthropic explanation.
Richard Swinburne, The Existence of God p. 138.
There is also the additional problem raised by Richard Gale of whether one can reasonably use argument to the best explanation to make a prediction about the past based upon evidence from that past’s own future. But there is a goose and gander problem here. If the use of argument to the best explanation is problematic for AP, then it is as well for a theistic explanation of the universe. See Richard Gale, “The Anthropic Principle,” Scientific American Vol. 245, 1981, pp. 157. Also see, M. A. Corey, God and the New Cosmology pp. 209ff.
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Harris, J.F. (2002). The Nature of God and Arguments for the Existence of God. In: Analytic Philosophy of Religion. Handbook of Contemporary Philosophy of Religion, vol 3. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-0719-0_3
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Unit 2: Metaphysics
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The Summa Theologica is a famous work written by Saint Thomas Aquinas between AD 1265 and 1274. It is divided into three main parts and covers all of the core theological teachings of Aquinas’s time. One of the questions the Summa Theologica is well known for addressing is the question of the existence of God. Aquinas responds to this question by offering the following five proofs:
1. The Argument from Motion: Our senses can perceive motion by seeing that things act on one another. Whatever moves is moved by something else. Consequently, there must be a First Mover that creates this chain reaction of motions. This is God. God sets all things in motion and gives them their potential.
2. The Argument from Efficient Cause: Because nothing can cause itself, everything must have a cause or something that creates an effect on another thing. Without a first cause, there would be no others. Therefore, the First Cause is God.
3. The Argument from Necessary Being: Because objects in the world come into existence and pass out of it, it is possible for those objects to exist or not exist at any particular time. However, nothing can come from nothing. This means something must exist at all times. This is God.
4. The Argument from Gradation: There are different degrees of goodness in different things. Following the “Great Chain of Being,” which states there is a gradual increase in complexity, created objects move from unformed inorganic matter to biologically complex organisms. Therefore, there must be a being of the highest form of good. This perfect being is God.
5. The Argument from Design: All things have an order or arrangement that leads them to a particular goal. Because the order of the universe cannot be the result of chance, design and purpose must be at work. This implies divine intelligence on the part of the designer. This is God.
“Aquinas’s Five Proofs for the Existence of God.” In The Catholic Faith Handbook for Youth, Teacher Guide. © 2011 by Saint Mary’s Press. https://www.smp.org/resourcecenter/resource/7061/
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Aquinas's Five Proofs for the Existence of God Copyright © 2020 by St. Mary's Press. All Rights Reserved.
A Level Philosophy & Religious Studies
OCR Christianity
This topic is not about whether we can know God exists, that’s what you learn about in the philosophy topics (cosmological & teleological arguments, etc).
This topic is about what sort of knowledge Christian belief should be based on. The two main options are faith and reason.
Most theologians agree that faith should be the foundation for belief in God, but there is considerable debate over the appropriate place, if any, of reason when it comes to belief in God.
Natural theology is the theory that knowledge of God can be gained by the power of the human mind. It has two main forms:
Natural theology through reasoning about the natural world. God’s revelation is present in his creation and human reason has the ability to discover it. This resulting in knowledge of God based on reason. This is typically a catholic view.
Natural theology through sensing God is defended by some, including protestant theologians who are sceptical of the power of reason to know God.
Revealed theology is the theory that knowledge of God can be gained from God’s revelation to us e.g in Jesus and the Bible. This results in revealed knowledge which is based on faith that what is received is from God. Typically, both Catholics and protestants believe in revealed theology.
Aquinas accepted that human reason could never know or understand God’s infinite divine nature. However, he argued that human reason can gain lesser knowledge of God, including:
This Aquinas a proponent of natural theology through reason, which he claimed could support faith in God.
Aquinas thought that reason could not provide an absolute proof that God existed, since that would make faith and revelation useless. He formulated a posteriori teleological and cosmological arguments which are only evidence for the Christian God that therefore support faith in God. The Bible doesn’t contain reasoned arguments for God like that.
Aquinas argued that meditating on God’s works in creation leads to us reflecting on God’s wisdom, admiring his power, having reverence for God in our hearts and love for God’s goodness in our souls. This is because if the goodness, beauty and wonder of creation, which represent a tiny proportion of God’s goodness, are so delightful to the human mind, then they will attract us even more strongly to God’s total goodness. So, natural theology can support faith.
This approach of viewing reason as a valid basis for supporting faith is typically a Catholic view:
“Faith and reason are like two wings on which the human spirit rises to the contemplation of truth” – Pope John Paul II.
Karl Barth was influenced by Augustine, who claimed that after the Fall our ability to reason become corrupted by original sin. This is a problem for natural theology which wants to make use of reason.
Barth’s argument is that is therefore dangerous to rely on human reason to know anything of God, including God’s morality. He said “the finite has no capacity for the infinite” , meaning our finite minds cannot grasp God’s infinite being. Whatever humans discover through reason is not divine, so to think it is divine is idolatry – putting earthly things on the level of God. Idolatry can lead to worship of nations and even to movements like the Nazis. After the corruption of the fall, human reason cannot reach God or God’s morality. Only faith in God’s revelation in the bible works.
Aquinas accepts that God’s infinite nature is beyond our understanding. He is trying to claim that reason can understand the natural law God created within our nature and that some necessary being or uncaused cause exists. Nonetheless, Barth claims that reason has ‘no capacity’, i.e., zero ability, to know anything whatsoever of God. It is corrupted by original sin and therefore Aquinas’ natural theology is dangerous for relying on it.
Aquinas defends his natural theology from original sin. Aquinas claims that pre-fall human nature contained three ‘goods’:
Original sin completely destroyed original justice, which caused us to lose perfect rational control over our desires. Nonetheless, Aquinas argues that our rationality and its accompanying inclination towards the good was not destroyed by original sin.
Aquinas argues that only rational beings can sin. It makes no sense to say animals sin, for example. The doctrine of original sin claims that post-lapsarian humans are sinners, so, we can sin. It follows that we must still be rational beings to some degree. Our reason therefore still inclines us, through synderesis, towards goodness.
Furthermore, Aquinas diverges from Augustine, claiming that concupiscence can sometimes be natural to humans, in those cases where our passions are governed by our reason.
Aquinas concludes that original sin has not destroyed our orientation towards the good nor is our reason always corrupted. Original sin can at most diminish our inclination towards goodness by creating a habit of acting against it. Sometimes, with God’s grace, our reason can discover knowledge of God’s existence and natural moral law. So, natural theology is valid.
“Participation of the eternal law in the rational creature is called the natural law”. – Aquinas
Arguably Aquinas has a balanced and realistic view, that our nature contains both good and bad and it is up to us to choose rightly.
However, Barth still seems correct that being corrupted by original sin makes our reasoning about God’s existence and morality also corrupted. Even if there is a natural law, we are unable to discover it reliably. The bad in our nature unfortunately means we cannot rely on the good. Whatever a weak and misled conscience discovers is too unreliable.
Humanity’s belief that it has the ability to know anything of God is the same arrogance that led Adam and Eve to disobey God. Humanity believing that it has the power to figure out right and wrong is what led to the arrogant certainty of the Nazis in their own superiority. This arrogance of natural theology is evidence of a human inability to be humble enough to solely rely on faith.
If natural theology was valid then humans would be able to know God’s existence or God’s morality through their own efforts. Barth argues that would make revelation unnecessary. Yet, God clearly thought revelation was necessary as he sent Jesus. It follows that natural theology cannot be valid.
However, Aquinas insists that his natural theology does not undermine faith but instead supports it. Aquinas’ arguments for God’s existence are only intended to show the reasonableness of belief in God. They at most show that there is evidence for some kind of God. This is nowhere near strong enough to actually replace faith. The Bible doesn’t contain reasoned arguments for God like that. This is partly why Aquinas rejected the Ontological argument, since as an a priori deductive argument it sought to prove God’s existence which Aquinas worried would cause it to replace faith.
Regarding natural law ethics, although the natural law is available to everyone, Aquinas still accepts that we need revelation to gain the divine law. Similarly, regarding arguments for God, a posteriori reasoning only provides evidence that a designer or necessary being exists. Aquinas still accepts that we need faith to know the Christian God in particular exists.
The knowledge we can gain from natural theology is not the same as revealed theology and therefore cannot not replace or undermine it. If reason only has this goal of supporting faith, then it cannot make revealed theology unnecessary.
John Calvin believed that all humans have an innate sense of the divine. Natural theology usually deals with our other senses like sight which enable us to gain knowledge of the natural world but the sense of divinity allows us to sense God’s existence. Since what we sense is not based on faith, the sense of God is natural theology. Calvin thought there was no rational way to be an atheist because of this sense. Even “backward peoples” and those “remote from civilization” have a belief that there is a God due to this sense. Calvin argued that this suggests God exists and put this sense of himself “in the hearts of all people”.
Anthropological study of the religion of tribal people remote from civilisation actually shows that they believe in magical spirits of animals and ancestors.
The extent of the spread of atheism in the 21 st century suggests that this sense of God doesn’t exist. In Calvin’s time it may have been unimaginable that someone could rationally be an atheist since everyone in western societies was a believer. Even people from other countries, of whom westerners back then knew very little, believed in some sort of God. In modern times however, since David Hume there has been significant philosophical defence of atheism. In some places like northern Europe atheism is now the majority held view. Many atheists say they have no sense of God.
Plantinga defends the sensus divinitatis from the argument that not everyone has such a sense. He argues that sin has a noetic quality, meaning it changes someone’s ability to have knowledge and insight, which could block the sense of God.
Response to Plantinga: there are many atheists who are good people however. In fact, the countries with the lowest crime, the northern European countries are the most atheistic in the world. For a noetic quality of sin to explain why atheists lack a sense of God, atheists would have to sin more than Christians but that doesn’t seem to be the case. If anything, the opposite is true.
Romans 1:20 is a bible verse which seems to justify natural theology:
“Since the creation of the world God’s invisible qualities – his external power and divine nature – have been clearly seen, being understood from what has been made, so that people are without excuse” .
Paul here seems to suggest that God’s qualities can be understood from what he has made, i.e. the natural world. This is what inductive a posteriori arguments such as the cosmological and teleological (design) arguments do.
Calvin’s analysis of Romans 1:20
Calvin was influenced by romans 1:20 but attempted to explain how it justifies natural theology without using human reason, i.e. the sensus divinitatis.
However, what about the word ‘understood’ – doesn’t that imply reasoning rather than merely sensing? Furthermore, the verse seems to suggest that the understanding is gained from creation itself, which sounds like reasoned inference from the natural world rather than a sense of God which isn’t derived from ‘what has been made’; creation. Finally, the verse suggests that God’s qualities and nature can be understood – not just his existence, so it seems to go further than the sensus divinitatis in that regard also.
Barth’s analysis of Romans 1:20
Barth responds to the claim that Romans 1:20 justifies natural theology with an alternative interpretation of it as being against natural theology. He accepts that the passage shows that creation does indeed allow knowledge of God, but argues humans are too sinful to manage that. Barth points to Romans 1:25 where St Paul warned, regarding the Gentiles (a non-jew), that “They exchanged the truth about God for a lie, and worshiped and served created things rather than the Creator”. Barth claims that Paul is showing that natural theology leads to idolatry – the worshiping of fake idols where, due to overlooking or misunderstanding the ‘qualitative distinction’ between humans and God, God is experienced in natural things like birds, and then in humans and half-spiritual things like Nation or Fatherland.
Grenz and Olson describe Barth’s view: “Any attempt to ground the truth of God’s Word in human reasoning, however devout and sincere, inevitably leads to theology being subverted by human, historical modes of thought and thus to ‘anthropocentric theology’. The evil against which Barth fought so hard.”
The ‘evil’ referred to here is Nazism, the influence of which on Christianity Barth resisted.
Who is capable of knowing God through his creation, if not us? The bible claims that knowledge is possible, so presumably there must be some being who can manage it. Barth claims that our reason is too corrupted and ‘fallen’ for it to apply to us, but arguably a better interpretation of the idolatry point from Romans 1:25 is that it is a warning that understanding God through the natural world can sometimes lead to idolatry and that we should be careful of that danger.
Furthermore, the final part of the passage: ‘so that people are without excuse’ clearly refers to us – people born after the fall. So, the passage must be about us.
Calvin was influenced by Augustine’s views on the fall and original sin. The garden of Eden is God’s intended design for the world as a paradise. The suffering brought into the world by the fall therefore disfigures the world to an extent, which makes it difficult for natural theology to reveal God since his original design is now mixed with disfiguring corruption. This means natural theology can only reveal the truth of God’s existence, but not the full revelation of God. However, Calvin is clear that knowledge of God is not simply a matter of knowing that God exists:
“We know God, not when we merely understand that there is a God but when we understand … what is conducive to his glory”.
This means we only truly know God when we know how to glorify God through worship and following God’s moral commands. Natural theology cannot achieve that knowledge. Jesus was God revealing himself and the Bible is a record of that revelation. We therefore require revealed theology; faith in Jesus and the Bible to have the full revelation of God’s existence. Calvin argued that people should see their mind as nothing more than a passive reception of the revelation of the Bible.
Calvin and Barth rely on the classic protestant argument that we should not rely on reason to understand anything about God or God’s morality because original sin has corrupted our reason. We should just have faith in the Bible and that should be our only source of knowledge about God’s existence or morality. This argument relies on a traditional view of original sin that goes back to Augustine, that human nature is corrupted, including our ability to reason.
Natural theology through reason could be defended by denying the existence of original sin. Original sin being a totally false doctrine is very unpopular position in traditional Christianity but there are some serious theologians who hold that position, such as Pelagius and some liberal Christians. Liberal Christians would argue that the scientific evidence suggests that we cannot take the genesis story of creation, including the fall, as literal events. In that case, Augustine cannot be correct in claiming that humanity was cursed by original sin.
Note that this is not the approach taken to defending natural theology through reason by Aquinas or Bruner, whose approach instead is to attempt to reconcile original sin with natural theology.
However, many theologians who don’t agree with Augustine about a literal fall or original sin being inherited still hold to the doctrine of original sin. Augustine could be defended that his views on human nature can be derived from the evidence of his observations of himself and his society. For example, Augustine told a story about how, as a child, he stole a pear from a garden, not because he was hungry but just for the pleasure of sinning. He concluded even children desire to sin and so must be born that way. Concupiscence can also be observed: people have their own will overwhelmed by bodily desires, which Augustine takes to be evidence for original sin.
Pelagius: Augustine’s observations reflect his society, not human nature. Pelagius goes further than Aquinas and Brunner however and completely denies the Augustinian doctrine of original sin.
“T he long habit of doing wrong which has infected us from childhood and corrupted us little by little over may years and ever after holds us in bondage and slavery to itself, so that it seems somehow to have acquired the force of nature” . – Pelagius
Although it might appear that we have strong forces within us that incline us toward evil, Pelagius argues that could simply be because of the way we are raised and it only appears to be our nature because of how thoroughly corrupted we are by our upbringing, which Pelagius refers to as being “educated in evil”.
We could add contemporary historical and sociological evidence to Pelagius’ point. Humans have progressed since Augustine’s time. Martin Luther King said, “the arc of the moral universe is long, but it bends towards justice”. Steven Pinker attributes to the power of human reason that violence has decreased, even considering the 20 th century. The average human life seems more secure than at any prior point in history. If Augustine were correct that original sin caused an irresistible temptation to sin, then human behaviour could not have improved, yet it has. Original sin is therefore a false doctrine and human reason is not corrupted.
Brunner a rgues that Augustine and Calvin are wrong to think that the fall destroyed the potential of human reason to gain knowledge of God’s existence. Brunner claimed the fall destroyed the material imago dei (Adam and Eve’s relationship with God) but not the formal imago dei , which is what separates us from animals and gives us language, reason and moral responsibility. This is corroborated by Psalm 8 which states humans are lower than the angels but higher than the animals. Humans still have rationality and language and are thus different to animals, so we must still have something of the formal imagio dei; it cannot have been completely destroyed by the fall.
The natural knowledge Brunner claims can be gained through reason is knowledge of preserving grace – that God continues to be active in maintaining creation, shielding it from the effects of sin. This can be known through the order in the universe; that the world is still spinning, and humans still existing reveals God’s gracious preservation of us. Brunner still thinks however that natural theology alone will always, due to our sinful state, result in a distorted knowledge of God. We need the special revelation of Christ to achieve full knowledge.
Barth claims that Brunner contradicts himself since Brunner admits every aspect of humanity is corrupted by sin, so it should follow that the formal image, including our reason, is corrupted, in which case arguably it cannot produce knowledge of God. Just because reason was not totally destroyed, it being corrupted still means it cannot be relied on to gain knowledge of God.
Easy Can God be known through reason alone? Is faith sufficient for belief in God? Assess the possibility of natural knowledge of God’s existence. Assess whether revealed knowledge of God’s existence is the only valid type.
Medium Assess whether the Fall completely removed all natural human knowledge of God Is faith in God’s revelation in Jesus required to know God? ‘Human sin and finitude prevents natural knowledge of God’ – Discuss. Can God be known through his creation? Does God’s creation reveal his beauty, goodness, design and purpose?
Hard Is natural knowledge of God the same as revealed knowledge? Is belief in God’s existence sufficient to put one’s trust in him? What is the human intellect capable by itself of discovering about God?
Year 12 Christianity topics: Augustine. Death & afterlife. Knowledge of God’s existence. Person of Jesus. Christian moral principles. Christian moral action.
Year 13 Christianity topics: Pluralism & theology. Pluralism & society. Gender & society. Gender & theology. Secularism. Liberation theology.
OCR Ethics OCR Philosophy OCR essay structure OCR list of possible exam questions
Home — Essay Samples — Philosophy — Existence — The Ontological, Cosmological, and Teleological Theories of the Existence of God
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Philosophical discussion of arguments for the existence of God appeared to have become extinct during the heyday of logical positivism and ordinary language philosophy. However, since the mid-1960s, there has been a resurgence of interest in these arguments. Much of the discussion has focused on Kant’s “big three” arguments: ontological arguments, cosmological arguments, and teleological arguments. Discussion of ontological arguments has been primarily concerned with (a) Anselm’s ontological argument; (b) modal ontological arguments, particularly as developed by Alvin Plantinga; and (c) higher-order ontological arguments, particularly Gödel’s ontological argument. Each of these kinds of arguments has found supporters, although few regard these as the strongest arguments that can be given for the existence of God. Discussion of cosmological arguments has been focused on (a) kalām cosmological arguments (defended, in particular, by William Lane Craig); (b) cosmological arguments from sufficient reason (defended, in particular, by Richard Gale and Alexander Pruss); and (c) cosmological arguments from contingency (defended, in particular, by Robert Koons and Timothy O’Connor). Discussion of teleological arguments has, in recent times, been partly driven by the emergence of the intelligent design movement in the United States. On the one hand, there has been a huge revival of enthusiasm for Paley’s biological argument for design. On the other hand, there has also been the development of fine-tuning teleological arguments driven primarily by results from very recent cosmological investigation of our universe. Moreover, new kinds of teleological arguments have also emerged—for example, Alvin Plantinga’s arguments for the incompatibility of metaphysical naturalism with evolutionary theory and Michael Rea’s arguments for the incompatibility of the rejection of intelligent design with materialism, realism about material objects, and realism about other minds. Other (“minor”) arguments for the existence of God that have received serious discussion in recent times include moral arguments, arguments from religious experience, arguments from miracles, arguments from consciousness, arguments from reason, and aesthetic arguments. Of course, there is also a host of “lesser” arguments that are mainly viewed as fodder for undergraduate dissection. Further topics that are germane to any discussion of arguments for the existence of God include (a) the appropriate goals at which these arguments should aim and the standards that they should meet, (b) the prospects for “cumulative” arguments (e.g., of the kind developed by Richard Swinburne), and (c) the prospects for prudential arguments that appeal to our desires rather than to our beliefs (e.g., Pascal’s wager).
There are few works that seek to provide a comprehensive overview of arguments for the existence of God; there are rather more works that seek to give a thorough treatment of arguments for and against the existence of God. Mackie 1982 is the gold standard; its treatment of arguments for the existence of God remained unmatched until the publication of Sobel 2004 . Other worthy treatments of a range of arguments for the existence of God—as parts of treatments of ranges of arguments for and against the existence of God—include Gale 1991 , Martin 1990 , and Oppy 2006 . The works mentioned so far are all products of nonbelief; they all provide critical analyses and negative assessments of the arguments for the existence of God that they consider. Plantinga 1990 is an interesting product of belief that also provides critical analyses and negative assessments of the arguments for the existence of God that it considers, although in the service of a wider argument in favor of the rationality of religious belief; first published in 1967, this work was clearly the gold standard for analysis of arguments for the existence of God prior to Mackie 1982 . Of the general works that provide a more positive assessment of arguments for the existence of God, consideration should certainly be given to Plantinga 2007 and, for those interested in a gentle but enthusiastic introduction, Davies 2004 .
Davies, Brian. An Introduction to the Philosophy of Religion . Oxford: Oxford University Press, 2004.
Wide-ranging introduction to philosophy of religion that includes a discussion of ontological arguments, cosmological arguments, teleological arguments, arguments from religious experience, arguments from miracles, and moral arguments. Good coverage of a range of arguments for the existence of God.
Gale, Richard. On the Nature and Existence of God . Cambridge, UK: Cambridge University Press, 1991.
Entertaining and energetic discussion of ontological arguments, cosmological arguments, arguments from religious experience, and pragmatic arguments (e.g., Pascal’s wager).
Mackie, John. The Miracle of Theism: Arguments for and against the Existence of God . New York: Oxford University Press, 1982.
Superb presentation of cumulative case argument for atheism. Considers ontological arguments, cosmological arguments, teleological arguments, moral arguments, arguments from consciousness, arguments from religious experience, arguments from miracles, and Pascal’s wager. Benchmark text for critical discussion of arguments for the existence of God.
Martin, Michael. Atheism: A Philosophical Justification . Philadelphia: Temple University Press, 1990.
Comprehensive cumulative case for atheism. Considers ontological arguments, cosmological arguments, teleological arguments, arguments from miracles, arguments from religious experience, Pascal’s wager, and minor evidential arguments. Worthy contribution to the literature on arguments for the existence of God.
Oppy, Graham. Arguing about Gods . Cambridge, UK: Cambridge University Press, 2006.
DOI: 10.1017/CBO9780511498978
Detailed discussion of cosmological arguments, teleological arguments, Pascal’s wager, and a range of other arguments. Discussion of ontological arguments that supplements Oppy 1995 (cited under Ontological Arguments ). Also includes some discussion of methodology: the mechanics of assessment of arguments for the existence of God.
Plantinga, Alvin. God and Other Minds: A Study of the Rational Justification of Belief in God . Ithaca, NY: Cornell University Press, 1990.
Groundbreaking discussion of cosmological arguments, ontological arguments, and teleological arguments. Instrumental in setting new standards of rigor and precision for the analysis of arguments for the existence of God. First published in 1967.
Plantinga, Alvin. “Appendix: Two Dozen (or so) Theistic Arguments.” In Alvin Plantinga . Edited by Deane-Peter Baker, 203–228. Cambridge, UK: Cambridge University Press, 2007.
DOI: 10.1017/CBO9780511611247
A collection of sketches or pointers to what Plantinga claims would be good arguments for the existence of God. Divided into (a) metaphysical arguments (aboutness, collections, numbers, counterfactuals, physical constants, complexity, contingency), (b) epistemological arguments (positive epistemic status, proper function, simplicity, induction, rejection of global skepticism, reference, intuition), (c) moral arguments, and (d) other arguments (colors and flavors, love, Mozart, play and enjoyment, providence, miracles).
Sobel, Jordan. Logic and Theism: Arguments for and against Beliefs in God . Cambridge, UK: Cambridge University Press, 2004.
Brilliant discussion of major arguments about the existence of God. Contains very detailed analyses of ontological arguments, cosmological arguments, teleological arguments, and arguments from miracles. Brought new rigor and technical precision to the discussion of these arguments for the existence of God.
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1000-Word Philosophy: An Introductory Anthology
Philosophy, One Thousand Words at a Time
Author: Thomas Metcalf Category: Philosophy of Religion Word count: 1000
The universe, or some of the objects in it, exhibit order, complexity, efficiency, and perhaps purpose. Many everyday objects with those features—e.g., watches and houses—were intentionally designed.
Should we conclude, therefore, that some of the “natural” objects in the universe, or the universe itself, was also intentionally designed?
If so, that designer might be God.
This essay introduces design arguments for the existence of God.
The standard ‘Design’ or ‘Teleological’ arguments for theism hold that there is evidence of design in nature and that this is evidence for the existence of God. [1]
There are three general versions of this argument:
Biological organisms arguably exhibit interesting order, complexity, and purpose: e.g., the human eye. By analogy, if you were to find and examine a camera lying in a field somewhere, you would be irrational to conclude that it had formed mindlessly and naturally. You should instead notice that it has many parts, each serving a particular purpose, working together for a valuable, general function. But, of course, the human eye also has many parts, each serving a particular purpose, working together for a valuable, general function. [5]
One version of these arguments holds that some biological systems exhibit ‘irreducible complexity.’ This occurs when some system would not be adaptive or useful unless all of its parts were present simultaneously. [6] As a simplified analogy, suppose that your immune system has two subsystems: a subsystem that detects and identifies invaders, and a subsystem that kills invaders and infected cells. [7] If your immune system lacked the first type of subsystem, then it would either not kill invaders, or it would also kill your own, healthy cells. If your immune system lacked the second type of subsystem, then it wouldn’t do anything to the invaders it detected. Only if both types are present is the immune system adaptive. But surely—the proponent of the argument insists—it’s extremely unlikely that both subsystems should have independently evolved at the same time. Yet, of course, God could have created them both at once, thereby creating a well-functioning immune system.
The physical universe itself, in the large scale, may also exhibit evidence of design. [8] Perhaps the planets’ orbiting their stars, and the probability-clouds of electrons, are orderly enough to remind us of the carefully-planned motion of mechanical systems inside a human-designed machine. Of course, someone might object that the planets are simply following the laws of conservation of angular momentum and gravity, [9] but the proponent of the physical design-argument can reply that laws of nature are also evidence of a designer. [10] Last, scientists generally agree that if certain features of the universe were slightly different— say, if gravity were somewhat stronger or weaker—then living beings like us would be physically impossible. [11] And there are allegedly very many other examples of laws, constants, and initial conditions that must be delicately balanced for life to exist. Yet here we are. So, the argument goes, either we got extremely lucky—perhaps as lucky as winning the lottery several times in a row [12] —or God “fine-tuned” the universe to permit life like us.
While design arguments have skilled defenders, most philosophers have not yet been persuaded. [13]
One potential problem with biological design arguments is that we know of a powerful mechanism that can mindlessly produce order, complexity, and purpose: the mechanism of evolution by natural selection. [14] This might even explain “irreducible complexity.” [15] For example, a species might evolve to have a simple immune-system in which the same system both identifies and attacks invaders; and then evolve, in addition, a second kind of subsystem, which only identifies invaders (thereby enhancing the power of the general immune system); and then evolve a third kind, which only attacks; and then cease to have the original system that does both.
Another potential problem with biological design arguments is that living creatures may exhibit evidence of “poor design.” [16] For example, human beings might have been better-designed if we didn’t use the same tube both to breathe and to swallow food. And we are vulnerable to several tragic, untreatable genetic diseases, such as Tay-Sachs disease, [17] which chiefly affects young children. Given the hypothesis of a divine designer who is much-more-intelligent than we, it is puzzling that some creatures exhibit poor design.
The philosopher David Hume challenged biological and physical design arguments in various ways. For example, he wondered whether God himself needs a designer, and whether mindless motion and laws might produce the order and complexity we observe. One might also ask how much we can conclude about a designer when we only have one universe to examine, and we have no track record of having observed universe-designers. And design arguments, in general, might better-support the hypothesis that there is an imperfect designer, or that there were many designers —both of which hypotheses are incompatible with traditional monotheism. [18]
Last, fine-tuning arguments have been critiqued by arguing that life-permission isn’t so surprising, even given the hypothesis of atheism. Maybe we live in a multiverse of universes with varying laws and constants; maybe there is a more-fundamental, simpler principle that generates a life-permitting set of further laws; and maybe we shouldn’t be surprised that we— living beings—live in a life -permitting universe. [19] How could it be otherwise?
Some philosophers endorse design arguments, but few of these philosophers believe that these arguments prove the existence of an omnipotent, omniscient, morally perfect God. [20] Therefore, to decide whether God exists, we must consider other arguments for theism, and weigh the evidence from design against any evidence against the existence of God that we might have.
[1] For landmark examples, see Aquinas (2006 [1265-1274]: Ia, 2, 3); Hume (1998 [1779]: Part 2); and Paley (2006 [1802]).
[2] Other than the items cited in the previous note, see Behe (1996) and Dembski (1998) for biological design-arguments.
[3] Swinburne (2004), Chapter 8.
[4] Collins (2012).
[5] Paley (2006 [1802]), Chapter 3.
[6] Behe (1996), pp. 130-31.
[7] Cf. Janeway et al . 2001.
[8] Hume ( op. cit. ), Part 2.
[10] Swinburne (1968), p. 202.
[11] Collins (2012), §§ 2.2-2.4.
[12] For example, Collins (2012: § 2.3.2) argues that even the strength of gravity could not have varied by more than one part in 10 60 and allowed the universe to permit life. If you have a one-in-10 8 chance of winning a lottery, then mathematically, to win that lottery seven times in a row (assuming no cheating and independent trials) is still more probable than ending up with just the right strength of gravity among 10 60 possible strengths. And the strength of gravity is allegedly only one of the many constants that needed to be fine-tuned to permit life like us.
[13] See Bourget and Chalmers (2014), p. 476, for evidence that most philosophers have rejected arguments for the existence of God.
[14] See for example Dawkins (2015).
[15] Shanks and Joplin (1999).
[16] See Charles Darwin (1999 [1859]), Chapter 14. See also Gould (1980). Swinburne (1968, p. 201) notes that this may even be true in physical design-arguments
[17] Walker (2006).
[18] Hume ( op. cit .).
[19] Collins (2012), §§ 5-7. See The Fine-Tuning Argument for the Existence of God by Thomas Metcalf.
[20] Swinburne (1968), p. 199. Collins (2012) himself presents his argument as evidential.
Aquinas, Thomas. Summa Theologiae, Questions on God , ed. Leftow, Brian and Davis, Brian. Cambridge, UK: Cambridge University Press, 2006 [1265-1274].
Behe, Michael J. Darwin’s Black Box: The Biochemical Challenge to Evolution . New York, NY: Touchstone, 1996.
Bourget, David and Chalmers, David J. “What do Philosophers Believe?” Philosophical Studies 170 (3) (2014): 465-500.
Collins, Robin. “The Teleological Argument,” in Craig, William Lane and Moreland, J. P. (eds.), The Blackwell Companion to Natural Theology (Malden, MA and Oxford, UK: Blackwell, 2012), pp. 202-281.
Darwin, Charles. The Origin of Species . New York, NY: Bantam Dell, 1999 [1859].
Dawkins, Richard. The Blind Watchmaker: Why the Evidence of Evolution Reveals a Universe without Design. New York, NY: W. W. Norton & Company, Inc., 2015.
Dembski, William A. The Design Inference: Eliminating Chance through Small Probabilities . New York, NY: Cambridge University Press, 1998.
Gould, Stephen Jay. The Panda’s Thumb: More Reflections in Natural History . New York, NY and London, UK: W. W. Norton & Company, Inc., 1980.
Hume, David. Dialogues Concerning Natural Religion , 2 nd ed., ed. Popkin, Richard H. Indianapolis, IN: Hackett Publishing Co., 1998 [1779].
Janeway, Charles et al. Immunobiology , 6 th ed. New York, NY: Garland Science Publishing, 2005.
Paley, William. Natural Theology or Evidences of the Existence and Attributes of the Deity . New York, NY: Oxford University Press, 2006 [1802].
Shanks, Niall and Karl H. Joplin. “Redundant Complexity: A Critical Analysis of Intelligent Design in Biochemistry.” Philosophy of Science 66 (2) (1999): 268-82.
Swinburne, Richard. “The Argument from Design.” Philosophy 43 (165) (1968): 199-212.
Swinburne, Richard. The Existence of God , 2 nd ed. New York, NY: Oxford University Press, 2004.
Walker, Julie. Tay-Sachs Disease . New York, NY: Rosen Publishing Group, 2006.
The Fine-Tuning Argument for the Existence of God by Thomas Metcalf
Interpretations of Probability by Thomas Metcalf
Bayesianism by Thomas Metcalf
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Tom Metcalf is an associate professor at Spring Hill College in Mobile, AL. He received his PhD in philosophy from the University of Colorado, Boulder. He specializes in ethics, metaethics, epistemology, and the philosophy of religion. Tom has two cats whose names are Hesperus and Phosphorus. shc.academia.edu/ThomasMetcalf
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One of the most enduring problems of philosophy is whether God exists. It has attracted the attention of some of the greatest minds across every philosophical tradition. Here, we look at five of the major arguments both for and against the existence of God.
The cosmological argument is fairly straightforward. A modern version of it reads:
This line of reasoning generally continues until reaching the idea of an “uncaused cause” or “prime mover.”
Variations of the cosmological argument date as far back as Ancient Greece. Aristotle’s take is particularly influential, the Islamic philosopher Avicenna made a similar case, and St. Thomas Aquinas refined it. Its modern defenders include Robert Koons and William Lane Craig.
It certainly is intuitive. The idea of getting something from nothing — potentially including the entire cosmos — is unsatisfying. And until recently, philosophers viewed the idea of an infinite regress with extreme suspicion, further favoring the need for an uncaused creator. But like every other argument on this list, there are strong objections to this one.
David Hume argued that while we assume that everything in our lives has a cause, that assumption does not necessarily apply to the universe as a whole. If so, then there is no need for a prime mover. Bertrand Russell argued that if the universe’s proposed creator is exempted from needing a creator, then we can say the same for the universe itself. Others have pointed out that even if the cosmological argument has merit, it doesn’t tell us anything about any creator. For all we know, the universe might have been created by a group of depressed purple giraffes.
The problem of evil is the most famous argument against the existence of an all-powerful and loving god. It’s also old. For example, it provides the central theme of the Book of Job in the Abrahamic traditions. But its best-known formulation came from the Greek philosopher Epicurus sometime around 300 BC.
In his words: “Is God willing to prevent evil but unable? Then he is not omnipotent. Is he able but not willing? Then he is malevolent. Is he both able and willing? Then whence comes evil?”
A modern variation by philosopher Paul Draper moves away from whether the problem renders a loving God logically impossible . His version leans toward the question of probability :
On a more personal level, the French Catholic priest Jean Meslier denounced his theism because he saw the problem of evil as one of many proofs that no God existed. American philosopher John Rawls abandoned Christianity after witnessing the horrors of WWII and the Holocaust. But it was Holocaust survivor Primo Levi who put it most succinctly: “There is Auschwitz, and so there cannot be God.”
Of course, there are counterarguments to the problem of evil. The most famous is the argument from free will . Proponents of this take, such as St. Augustine, argue that the need for free will is great enough to allow certain evils to exist. These evils are caused primarily by the improper use of free will, and divine intervention against any evil caused by free will would be an even greater evil.
John Hick suggested that the existence of evil is necessary for the moral growth needed to develop a soul. Others have argued that evil, as an independent substance, does not exist, and still others claim that what evil does exist is the minimal amount logically possible.
It’s worth noting that the problem of evil only applies to certain conceptions of deities — notably all-powerful, all-knowing, and benevolent ones. The argument does not rule out the capricious Greek gods, Spinoza’s pantheism, or the disinterested God of the deists. The problem is less of a concern for many Eastern religions, too.
Also known as “the argument from design,” the teleological argument claims the world’s complexity proves a designer exists. The argument is, again, rather straightforward:
This argument dates back to at least Socrates; however, the Stoic philosophers developed the argument into the forms we still see today. The Islamic philosopher Averroes endorsed it, a story about Rabbi Meir makes a direct reference to it, and even Issac Newton supported it. But the most famous version of it was put forward by William Paley. In his “ watchmaker analogy ,” he imagines what we would say if we had to explain how a watch we found on the ground got there. As he puts it:
“The inference we think is inevitable, that the watch must have had a maker — that there must have existed, at some time and at some place or other, an artificer or artificers who formed it for the purpose which we find it actually to answer …”
Of the arguments for the existence of a God, this one has perhaps the greatest connection to the parts of our lives outside of philosophy. It asks us to consider the world’s beauty, the depths of the mysteries of nature, the intricacies of the environment, and what those mean for how we understand the world and how it came to be.
Beautiful as that thought is, the teleological argument has still earned its detractors. As David Hume noted, this world is far from perfect, and if a deity made it, then that deity must be an “inferior” one. He also asserted that we cannot say if this universe is well designed as we haven’t seen any others. Voltaire pointed out that the designer in the argument doesn’t have to be a God. Meanwhile, other thinkers have argued that the analogy between man-made objects and the entirety of reality is invalid.
One of the more whimsical arguments against the existence of any gods was put forward by Bertrand Russell. And like any member of the British aristocracy in good standing, the third Earl Russell invoked tea in his argument.
He asked his readers to suppose that he was seriously advancing the idea of a teapot floating in orbit around the sun. This teapot is also impossible to detect. The question then: Is it on you to disprove the impossibility of this teapot’s existence, or is it his responsibility to prove it is real?
Russell’s point was that anyone making such a claim is the one who must prove it — not the person objecting to it. And since nobody takes arguments of a space-faring teapot seriously, why then should we treat other such arguments as sacred? Perhaps the greatest legacy of the argument is its use as a tool to remind users where the burden of proof lies when an assertion is made. (And if you’re not into tea, Carl Sagan once made a similar point about the impossible-to-detect dragon living in his garage. )
The relevance of this analogy to existing religions has been debated. One common objection is it would be difficult to hide the evidence of sending a teapot to space. Another is that while no reasonable person is arguing that a star-trekking teapot exists, there are reasonable people who maintain there is a God.
Our last argument is certainly the most abstract. It is also perhaps both the most interesting from a philosophical point of view and the easiest to dismiss as ridiculous. As Rene Descartes put it:
This is based on a similar argument advanced by St. Anselm. Avicenna made a related argument in the Islamic world, and the ancient Greek poet-philosopher Xenophanes authored similar ideas in some of the oldest extant philosophy. And in his younger years, Bertrand Russell was convinced by this argument — though, as you’ve probably guessed, he later rejected it.
The primary counterargument is that “existence” is not a part of the concept of something, a quality, or a predicate. This approach was first formulated by Immanuel Kant, a Christian himself. Russell came to agree with Kant, though he still found the original argument to be well structured.
St. Thomas Aquinas objected to Anselm’s version of the argument, as it more explicitly requires us to understand the essence of God. If this is impossible, as he and many subsequent thinkers maintained, the argument can’t prove anything. In modern times, William Rowe suggests that the argument presupposes the existence of God.
Guest Thinkers 42% of Dartmouth Seniors Say They Don’t Believe in God Today I received the latest issue of Dartmouth Alumni magazine to discover inside an interesting poll of graduating seniors at my alma mater. Long branded a conservative campus–with notable right […]
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The existence and attributes of God are evident from the creation itself, even though sinful human beings suppress and distort their natural knowledge of God.
The existence of God is foundational to the study of theology. The Bible does not seek to prove God’s existence, but rather takes it for granted. Scripture expresses a strong doctrine of natural revelation: the existence and attributes of God are evident from the creation itself, even though sinful human beings suppress and distort their natural knowledge of God. The dominant question in the Old and New Testaments is not whether God is, but rather who God is. Philosophers both Christian and non-Christian have offered a wide range of arguments for God’s existence, and the discipline of natural theology (what can be known or proven about God from nature alone) is flourishing today. Some philosophers, however, have proposed that belief in God is rationally justified even without theistic arguments or evidences. Meanwhile, professing atheists have offered arguments against God’s existence; the most popular is the argument from evil, which contends that the existence and extent of evil in the world gives us good reason not to believe in God. In response, Christian thinkers have developed various theodicies, which seek to explain why God is morally justified in permitting the evils we observe.
If theology is the study of God and his works, then the existence of God is as foundational to theology as the existence of rocks is to geology. Two basic questions have been raised regarding belief in God’s existence: (1) Is it true ? (2) Is it rationally justified (and if so, on what grounds)? The second is distinct from the first because a belief can be true without being rationally justified (e.g., someone might irrationally believe that he’ll die on a Thursday, a belief that turns out by chance to be true). Philosophers have grappled with both questions for millennia. In this essay, we will consider what the Bible says in answer to these questions, before sampling the answers of some influential Christian thinkers.
The Bible opens not with a proof of God’s existence, but with a pronouncement of God’s works: “In the beginning God created the heavens and the earth.” This foundational assertion of Scripture assumes that the reader not only knows already that God exists, but also has a basic grasp of who this God is. Throughout the Old Testament, belief in a creator God is treated as normal and natural for all human beings, even though the pagan nations have fallen into confusions about the true identity of this God. Psalm 19 vividly expresses a doctrine of natural revelation: the entire created universe ‘declares’ and ‘proclaims’ the glorious works of God. Proverbs tells us that “the fear of the Lord” is the starting point for knowledge and wisdom (Prov. 1:7; 9:10; cf. Psa. 111:10). Denying God’s existence is therefore intellectually and morally perverse (Psa. 14:1; 53:1). Indeed, the dominant concern throughout the Old Testament is not whether God is, but who God is. Is Yahweh the one true God or not (Deut. 4:35; 1Kgs. 18:21, 37, 39; Jer. 10:10)? The worldview that provides the foil for Hebrew monotheism is pagan polytheism rather than secular atheism.
This stance on the existence of God continues into the New Testament, which builds on the foundation of the uncompromising monotheism of the Old. In his epistle to the Romans, the apostle Paul insists that God’s “eternal power and divine nature” are clearly perceived from the created order itself. Objectively speaking, there can be no rational basis for doubt about the existence of a transcendent personal creator, and thus there can be no excuse for unbelief (Rom. 1:20). Endued with a natural knowledge of our creator we owe God our honor and thanks, and our failure to do so serves as the primary basis for the manifestation of God’s wrath and judgment. The apostle’s robust doctrine of natural revelation has raised the question of whether anyone can truly be an atheist. The answer will depend, first, on how “atheist” is defined, and second, on what precisely Paul means when he speaks of people “knowing” God. If the idea is that all men retain some genuine knowledge of God, despite their sinful suppression of natural revelation, it’s hard to maintain that anyone could completely lack any cognitive awareness of God’s existence. But if “atheist” is defined as someone who denies the existence of God or professes not to believe in God, Romans 1 not only allows for the existence of atheists – it effectively predicts it. Atheism might then be understood as a form of culpable self-deception.
Paul’s convictions about natural revelation are put to work in his preaching to Gentile audiences in Lystra and Athens (Acts 14:15–17; 17:22–31). Paul assumes not only that his hearers know certain things about God from the created order but also that they have sinfully suppressed and distorted these revealed truths, turning instead to idolatrous worship of the creation (cf. Rom. 1:22–25). Even so, his appeals to general revelation are never offered in isolation from special revelation: the Old Testament Scriptures, the person of Jesus Christ, and the testimony of Christ’s apostles.
Elsewhere in the New Testament, the question of the existence of God is almost never explicitly raised, but rather serves as a foundational presupposition, an unquestionable background assumption. One exception would be the writer to the Hebrews, who remarks that “whoever would draw near to God must believe that he exists and that he rewards those who seek him” (11:6). In general, the New Testament is concerned less with philosophical questions about the existence of God than with practical questions about how sinners can have a saving relationship with the God whose existence is obvious. As in the Old Testament, the pressing question is never whether God is, but who God is. Is Jesus Christ the revelation of God in human flesh or not? That’s the crux of the issue.
Consider again the two questions mentioned at the outset. (1) Is belief in God true ? (2) Is it rationally justified ? One appealing way to answer both questions affirmatively is to offer a theistic argument that seeks to infer God’s existence from other things we know, observe, or take for granted. A cogent theistic argument, one assumes, would not only demonstrate the truth of God’s existence but also provide rational justification for believing it. There is a vast literature on theistic arguments, so only a sampling of highlights can be given here.
The first generation of Christian apologists felt little need to argue for God’s existence for the same reason one finds no such arguments in the New Testament: the main challenges to Christian theism came not from atheism, but from non-Christian theism (Judaism) and pagan polytheism. Not until the medieval period do we find formal arguments for the existence of God offered, and even then the arguments do not function primarily as refutations of atheism but as philosophical meditations on the nature of God and the relationship between faith and reason.
One of the most famous and controversial is the ontological argument of St. Anselm (1033–1109) according to which God’s existence can be deduced merely from the definition of God, such that atheism leads inevitably to self-contradiction. One distinctive of the argument is that it relies on pure reason alone with no dependence on empirical premises. Various versions of the ontological argument have been developed and defended, and opinion is sharply divided even among Christian philosophers over whether there are, or even could be, any sound versions.
Cosmological arguments seek to demonstrate that that the existence of the universe, or some phenomenon within the universe, demands a causal explanation originating in a necessary first cause beyond the universe. St. Thomas Aquinas (1225–1274) famously offered “Five Ways” of demonstrating God’s existence, each of which can be understood as kind of cosmological argument. For example, one of the Five Ways argues that any motion (change) has to be explained by some mover (cause). If that mover itself exhibits motion, there must be a prior mover to explain it, and because there cannot be an infinite regress of moved movers, there must be an original unmoved mover : an eternal, immutable, and self-existent first cause. Other notable defenders of cosmological arguments include G. W. Leibniz (1646–1716) and Samuel Clarke (1675–1729), and more recently Richard Swinburne and William Lane Craig.
Teleological arguments , which along with cosmological arguments can be traced back to the ancient Greeks, contend that God is the best explanation for apparent design or order in the universe. Simply put, design requires a designer, and thus the appearance of design in the natural world is evidence of a supernatural designer. William Paley (1743–1805) is best known for his argument from analogy which compares functional arrangements in natural organisms to those in human artifacts such as pocket watches. While design arguments suffered a setback with the rise of the Darwinian theory of evolution, which purports to explain the apparent design of organisms in terms of undirected adaptive processes, the so-called Intelligent Design Movement has reinvigorated teleological arguments with insights from contemporary cosmology and molecular biology while exposing serious shortcomings in naturalistic Darwinian explanations.
In the twentieth century, the moral argument gained considerable popularity, not least due to its deployment by C. S. Lewis (1898–1963) in his bestseller Mere Christianity . The argument typically aims to show that only a theistic worldview can account for objective moral laws and values. As with the other theistic arguments there are many different versions of the moral argument, trading on various aspects of our moral intuitions and assumptions. Since such arguments are typically premised on moral realism —the view that there are objective moral truths that cannot be reduced to mere human preferences or conventions—extra work is often required to defend such arguments in a culture where moral sensibilities have been eroded by subjectivism, relativism, and nihilism.
Cornelius Van Til (1895–1987) gained some notoriety for his forceful criticisms of the “traditional method” of Christian apologetics which capitulated to “autonomous human reason.” Van Til held that any respectable theistic argument ought to disclose the undeniability of the triune God revealed in Scripture, not merely a First Cause or Intelligent Designer. He therefore advocated an alternative approach, centered on a transcendental argument for the existence of God, whereby the Christian seeks to show that human reason, far from being autonomous and self-sufficient, presupposes the God of Christianity, the “All-Conditioner” who created, sustains, and directs all things according to the counsel of his will. As Van Til put it, we should argue “from the impossibility of the contrary”: if we deny the God of the Bible, we jettison the very grounds for assuming that our minds have the capacity for rational thought and for reliable knowledge of the world.
Since the renaissance of Christian philosophy in the second half of the twentieth century, there has been renewed interest and enthusiasm for the project of developing and defending theistic arguments. New and improved versions of the classical arguments have been offered, while developments in contemporary analytic philosophy have opened up new avenues for natural theology. In his 1986 lecture, “Two Dozen (or so) Theistic Arguments,” Alvin Plantinga sketched out an entire A to Z of arguments for God, most of which had never been previously explored. Plantinga’s suggestions have since been expanded into a book-length treatment by other philosophers. The discipline of Christian natural theology is thriving as never before.
Still, are any of these arguments actually needed? Does confidence about God’s existence have to be funded by philosophical proofs? Since the Enlightenment, it has often been held that belief in God is rationally justified only if it can be supported by philosophical proofs or scientific evidences. While Romans 1:18–21 has sometimes been taken as a mandate for theistic arguments, Paul’s language in that passage suggests that our knowledge of God from natural revelation is far more immediate, intuitive, and universally accessible.
In the opening chapters of his Institutes of the Christian Religion , John Calvin (1509–1564) considers what can be known of God apart from special revelation and asserts that a natural knowledge has been universally implanted in mankind by the Creator: “There is within the human mind, and indeed by natural instinct, an awareness of divinity” ( Institutes , I.3.1). Calvin speaks of a sensus divinitatis , “a sense of deity,” possessed by every single person in virtue of being created in God’s image. This internal awareness of the Creator “can never be effaced,” even though sinful men “struggle furiously” to escape it. Our implanted natural knowledge of God can be likened in some respects to our natural knowledge of the moral law through the God-given faculty of conscience (Rom. 2:14-15). We know instinctively that it’s wrong to lie and steal; no philosophical argument is needed to prove such things. Similarly, we know instinctively that there is a God who made us and to whom we owe honor and thanks.
In the 1980s, a number of Protestant philosophers led by Alvin Plantinga, Nicholas Wolterstorff, and William Alston developed a sophisticated defense of Calvin’s notion of the sensus divinitatis . Dubbed the “Reformed epistemologists,” they argued that theistic beliefs can be (and normally should be) properly basic : rationally justified even without empirical evidences or philosophical proofs. On this view, believing that God exists is comparable to believing that the world of our experience really exists; it’s entirely rational, even if we can’t philosophically demonstrate it. Indeed, it would be quite dysfunctional to believe otherwise.
Even granting that there is a universal natural knowledge of God, there are unquestionably people who deny God’s existence and offer arguments in their defense. Some have attempted to exposed contradictions within the concept of God (e.g., between omniscience and divine freedom) thereby likening God to a “square circle” whose existence is logically impossible. At most such arguments only rule out certain conceptions of God, conceptions that are often at odds with the biblical view of God in any case.
A less ambitious approach is to place the burden of proof on the theist: in the absence of good arguments for God’s existence, one ought to adopt the “default” position of atheism (or at least agnosticism). This stance is hard to maintain given the many impressive theistic arguments championed by Christian philosophers today, not to mention the Reformed epistemologists’ argument that belief in God is properly basic.
The most popular atheistic argument is undoubtedly the argument from evil. The strong version of the argument maintains that the existence of evil is logically incompatible with the existence of an all-good, all-powerful God. The more modest version contends that particularly horrifying and seemingly gratuitous instances of evil, such as the Holocaust, provide strong evidence against God’s existence. The problem of evil has invited various theodicies : attempts to explain how God can be morally justified in permitting the evils we encounter in the world. While such explanations can be useful, they aren’t strictly necessary for rebutting the argument from evil. It is enough to point out that given the complexities of the world and the considerable limitations of human knowledge, we are in no position to conclude that God couldn’t have morally justifying reasons for allowing the evils we observe. Indeed, if we already have grounds for believing in God, we can reasonably conclude that God must have such reasons, whether or not we can discern them.
This essay is part of the Concise Theology series. All views expressed in this essay are those of the author. This essay is freely available under Creative Commons License with Attribution-ShareAlike, allowing users to share it in other mediums/formats and adapt/translate the content as long as an attribution link, indication of changes, and the same Creative Commons License applies to that material.
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Table of Contents
Have you ever pondered the deep questions of existence, such as whether there’s a higher power orchestrating the universe? Philosophers have grappled with this question for centuries, formulating arguments that range from deeply intuitive to complex and abstract. Today, we embark on a journey through time, exploring the evolution of some of the most influential arguments for the existence of God, starting with Saint Augustine and leading up to ontological argument for God's existence">Saint Anselm .
Imagine a world without change, a realm of perfect forms and absolute truths. This is where our journey begins—with Augustine’s assertion that our understanding of these eternal truths points to the existence of God. Augustine believed that concepts like numbers and geometric shapes, which remain constant despite our worldly experiences, indicate a higher realm of truth.
Fast forward a few centuries, and we encounter Anselm’s revolutionary ontological argument. Anselm proposed a bold idea: the very concept of God implies His existence. He posited that God is “that than which nothing greater can be conceived,” and existing in reality is greater than existing merely in the mind.
No argument goes without its critics, and the philosophical discourse around God’s existence is no exception. Augustine’s and Anselm’s arguments have faced various criticisms over the ages:
The debates sparked by Augustine and Anselm’s arguments have left an indelible mark on the philosophy of religion. Despite the critiques, these arguments provided a foundation for later thinkers to build upon:
Ultimately, the historical discourse on God’s existence reveals just as much about human nature as it does about theology . It highlights our innate desire to understand the world and our place within it. Augustine’s internal proof and Anselm’s ontological argument demonstrate the timeless human quest to grapple with the unknown and seek answers to life’s existential questions .
The path from Augustine to Anselm shows a progression of thought that is both fascinating and complex. Their arguments continue to inspire and challenge, acting as a springboard for contemporary philosophy and theology. As we delve into this rich historical tapestry, we are reminded that the search for truth, whether it be about God or the nature of reality, is a journey that is both personal and universal.
From the internal certainties of Augustine to the logical deductions of Anselm, the arguments for the existence of God have shaped philosophical and theological thought for centuries. They have been met with fervent support and sharp criticism, reflecting the enduring human quest to understand the divine. As we reflect on these arguments, we are invited to consider our own beliefs and the reasons that underpin them.
What do you think? Are the arguments of Augustine and Anselm convincing in today’s context? How do these early philosophical inquiries influence your understanding of the possibility of a higher power?
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1 Definition and Scope of Philosophy of Religion
2 Importance of the Philosophy of Religion
3 Philosophy of Religion and Other Disciplines
4 History of Philosophy of Religion
5 Religious Experience
6 Religious Language
7 Religious Structures and Institutions
8 Religious Tolerance
9 Introduction to Atheism/A-theism
10 Deism and Agnosticism
11 Materialism and Marxism
12 Problem of Evil
13 Introduction to Theism
14 Arguments for the Existence of God
15 Prominent Theistic Philosophers of India
16 Prominent Theistic Philosophers of the West
COMMENTS
existence of God, in religion, the proposition that there is a supreme supernatural or preternatural being that is the creator or sustainer or ruler of the universe and all things in it, including human beings. In many religions God is also conceived as perfect and unfathomable by humans, as all-powerful and all-knowing (omnipotent and ...
Moral arguments for God's existence form a diverse family of arguments that reason from some feature of morality or the moral life to the existence of God, usually understood as a morally good creator of the universe. ... The Will to Believe and Other Essays in Popular Philosophy, New York: Longmans Green and Co. Kahane, Guy, 2014 ...
1. The Jews introduced the world to the idea of the one God, with his universal moral code. 2. The survival of the Jews, living for milliennia without a country of their own, and facing a multitude of enemies that sought to destroy not only their religion but all remnants of the race, is a historical unlikelihood.
Indeed, one famous argument for God's existence—the ontological argument—attempts to show that God's existence follows from the very concept of God. We won't attempt to examine all of the arguments that have been offered for theism, but will instead focus on just three of the most influential arguments: the cosmological argument, the ...
By contrast, the theist has a ready explanation: When God created the physical universe He designed it in terms of the mathematical structure which He had in mind. We can summarize this argument as follows: 1. If God did not exist, the applicability of mathematics would be just a happy coincidence. 2.
A level philosophy looks at 4 arguments relating to the existence of God. These are: The ontological argument. The teleological argument. The cosmological argument. The problem of evil. There are various versions of each argument as well as numerous responses to each.
The ontological argument was presented by philosophers including St. Anselm and René Descartes. The argument puts forward that the existence of God is obvious and self-evident. The formulation of logic they proposed is presented below: God is the greatest conceivable being. It is greater to exist than not to exist.
In this paper, I examine Aristotle's cosmological proof of God's existence, Avicenna's metaphysical proof, and Thomas Aquinas's five-way proof. By comparing these proofs, I argue that philosophers and theologians take different approaches to proving God's existence not only because they follow different epistemological principles but, more fundamentally, because they construct ...
This essay is going to provide two arguments for the existence of God. Get a custom essay on The Existence of God: Key Arguments. The anthropic principle is an argument of the existence of a reasonable plan for the structure of the Universe. According to this argument, only God may create the complex structure of nature, universe, and life on ...
J. N. Findlay, "Can God's Existence Be Disproved," in New Essays in Philosophical Theology, edited by Antony Flew and Alasdair Maclntyre (London: SCM Press, 1955), pp. 47-75. This article is widely reprinted in different anthologies.
One of the questions the Summa Theologica is well known for addressing is the question of the existence of God. Aquinas responds to this question by offering the following five proofs: 1. The Argument from Motion: Our senses can perceive motion by seeing that things act on one another. Whatever moves is moved by something else.
One argument to prove God's existence is known as the 'ontological argument' — an argument which, by reason alone - proves that, the very idea of God as a perfect being means that God must exist, that his non-existence would be contradictory. These kinds of a priori arguments rely on logical deduction, rather than something
Revealed theology is the theory that knowledge of God can be gained from God's revelation to us e.g in Jesus and the Bible. This results in revealed knowledge which is based on faith that what is received is from God. Typically, both Catholics and protestants believe in revealed theology.
If that was the case, then when people stated that God does not exist they would mean that there is a God and he lacks the property of existence. This means that people would be confirming and refusing God's existence. Moving on, another argument that is used to justify the existence of God is the cosmological argument.
Introduction. Philosophical discussion of arguments for the existence of God appeared to have become extinct during the heyday of logical positivism and ordinary language philosophy. However, since the mid-1960s, there has been a resurgence of interest in these arguments. Much of the discussion has focused on Kant's "big three" arguments ...
This essay introduces design arguments for the existence of God. 1. The Arguments. The standard 'Design' or 'Teleological' arguments for theism hold that there is evidence of design in nature and that this is evidence for the existence of God.[1] There are three general versions of this argument: 2.
Critical thinking be it evaluation of logic or deductive reasoning put forward as philosophical arguments further justifies the existence of God. Three main philosophical arguments explains the existence of God; anthological, first cause, and argument from design. Simple reasoning clearly shows that there is a God.
The primary counterargument is that "existence" is not a part of the concept of something, a quality, or a predicate. This approach was first formulated by Immanuel Kant, a Christian himself ...
Existence. One of the most fascinating arguments for the existence of an all-perfect God is the ontological argument. While there are several different versions of the argument, all purport to show that it is self-contradictory to deny that there exists a greatest possible being. Thus, on this general line of argument, it is a necessary truth ...
The classical teleological argument set out to proof God as the Designer of the universe while the Moral argument proof God to be the law Giver and these two arguments will be the major focus of this essay. This is all in an attempt to show the numerous avenues to extrapolate the existence of God. The design or purpose (telos) argument has ...
Scripture and the Existence of God. The Bible opens not with a proof of God's existence, but with a pronouncement of God's works: "In the beginning God created the heavens and the earth.". This foundational assertion of Scripture assumes that the reader not only knows already that God exists, but also has a basic grasp of who this God is.
The book also includes fascinating insights into the passions, beliefs and struggles of the philosophers and scientists who have tackled the challenge of proving the existence of God, including Thomas Aquinas, and Kurt Gödel - who at the end of his career as a famous mathematician worked on a secret project to prove the existence of God. The ...
This section covers the transition from Augustine's internal proof of God's existence based on eternal truths and the soul's pursuit of happiness, to Anselm's ontological argument which posits that the concept of God inherently implies His existence. It reflects on the progression of thought and the criticism these arguments faced, highlighting their foundational role in theological discourse.