I have read “The God Delusion”, and I have to say I agree with the critics of the book. Dawkins is seriously out of his depth whenever he strays away from biology, and it shows. The God Delusion, I think, is little more than a mostly fallacious, bigoted atheist screed that is of little value in the wider philosophical debate.
So for instance I think his problem with Aquinas is that he simply doesn’t understand what Aquinas is saying. Aquinas first three proofs are basically about whether the natural laws alone as we understand them are able to account for all that we see, or whether it is necessary to have some transcendent thing outside of the natural world to form a full explanation of the universe around us. It is this transcendent thing that Aquinas calls God.
Aquinas first three proofs, in their simplest form, have two premises:
- That every “thing” (be it motion, cause or existing object) is necessarily preceded by some other thing.
- It is impossible to have an infinite chain of things that will necessarily extend back to infinite time
Therefore he comes to the conclusion:
There must be some origin of these things that is not accounted for by natural processes. This thing is by definition “God”
Dawkins two objections, as best I can see are:
- God is not immune to the same questions of origin. Or in Dawkins words “… make the entirely unwarranted assumption that God himself is immune to the regress.”
- The argument does nothing to define the properties of God.
The first objection Dawkins raises does nothing to invalidate the premises of Aquinas argument. Aquinas defines God to be that which has no pre-existing thing before it. Therefore by Aquinas definitions he is absolutely justified in saying that God is immune from regress. Further, if we say that God is not immune from regress, then we find ourselves back in the infinite chain of causes. God needs a cause, and then God’s cause needs a cause and so on. If the second premise of Aquinas argument is true, this must terminate somewhere and we can then define that somewhere as “God”.
The second objection is just entirely irrelevant. As has been pointed out Aquinas did not intend to derive the properties of God through that argument save for his existence, so the criticism is neither here nor there.
If Dawkins were to show that Aquinas argument is false, he must attack the premises that the argument is based on. So for premise 1 if you could show that there are some natural things that are not preceded by other things, that would invalidate the argument. So for instance in the argument of first causes one could point out that quantum mechanics suggests that there are some events, such as nuclear decay, that happen without direct cause, and therefore the infinite chain is broken.
Likewise the second premise could be attacked if you could show that it is possible to have an infinite chain of things. So for instance if the universe always existed and therefore had no real beginning, it may be possible to have an infinite chain. Unfortunately modern cosmology is not shaping up that way, but it is still another tactic in invalidating the argument.
Dawkins does none of this, and therefore the only real conclusion is that either he doesn’t understand the argument, or that he has simply glossed over it because he has no real answers.
Calculon.