Sorry I haven’t been keeping up with all of the posts here. I have been thinking about the issue some more and have some other points that I would like to make
On the “contradiction” between definition and conclusion
I think here a lot of effort has been put into trying to show that Aquinas arguments do not connect to has conclusion, but I think most of the arguments thus-far are mis-stating exactly what Aquinas said. If you read through his words carefully, within the arguments themselves there is a meaningful distinction made between God and other entities. So:
[QUOTE=Aquinas]
The second way is from the nature of the efficient cause. In the world of sense we find there is an order of efficient causes. There is no case known (neither is it, indeed, possible) in which a thing is found to be the efficient cause of itself; for so it would be prior to itself, which is impossible. Now in efficient causes it is not possible to go on to infinity, because in all efficient causes following in order, the first is the cause of the intermediate cause, and the intermediate is the cause of the ultimate cause, whether the intermediate cause be several, or only one. Now to take away the cause is to take away the effect. Therefore, if there be no first cause among efficient causes, there will be no ultimate, nor any intermediate cause. But if in efficient causes it is possible to go on to infinity, there will be no first efficient cause, neither will there be an ultimate effect, nor any intermediate efficient causes; all of which is plainly false. Therefore it is necessary to admit a first efficient cause, to which everyone gives the name of God.
[/QUOTE]
(Bolding mine)
Note that Aquinas did NOT say (as those that say there is a contradiction suggest he did) that no causeless events are possible, except for God. What he is saying is that causeless events are not part of our direct experience of the world. Yet even through we do not observe them they must exist since otherwise there is no way to explain the world that we do experience.
This is important and significant because it is in direct contrast to Dawkinsian style naturalism. This holds that there is nothing at all beyond what we experience, Gods or otherwise. Dawkins main battle-cry in all that we writes on religion is “where is the evidence”. Aquinas said that the natural world itself necessarily points to the existence of something else that we do not experience, and have no direct evidence of. Yet the nature of the world cannot be explained in any other way but to say that this entity exits.
It is true that this argument tells us nothing of the nature of the causeless event, save that it is causeless. It is also true that, on the basis of this argument alone “God” fits in with many worldviews, including theism, deism and polytheism. Yet this argument was never intended to be taken on its own. Aquinas justifies calling the uncaused cause “God” in the rest of his quite sizeable work. To suggest that this argument is the beginning and the end of what Aquinas said on the matter is obviously false.
On causeless events and quantum mechanics
In the understanding of nature given by classical physics, the world is entirely deterministic, Aquinas premise of every observable event requiring a cause holds. In the newer quantized understanding of nature, the world is no longer strictly deterministic. However, even though I believe I was the first to raise this objection in the thread, I am not convinced that quantum mechanics completely invalidates the statement that we observe no causeless events.
The problem is that while the outcome of individual quantum events are not deterministic, neither are they entirely random. Probabilities of quantum events are determined by the surrounding conditions, such that given a description of a system we can determine the likelihood of an event occurring. It also means that large ensembles of quantum events behave in an entirely deterministic way, as the individual action of each entity averages out over the total.
So for instance take the quantum tunneling of an electron through a potential barrier. While it may be unknown specifically which electrons will tunnel through the barrier and which will not, the overall tunneling current is able to be determined based on the probabilities of a tunneling event. Additionally, since the tunneling probability is connected to the size of the potential barrier, if I change the barrier I can deterministically change the tunneling current.
It is important to remember that quantum mechanics is not magic. It does NOT say that anything can happen anywhere for any reason. What it does suggest that while events are non-deterministic, the probabilities of each event are strictly controlled by the surrounding conditions and are therefore deterministic. For quantum events to be entirely causeless even the probabilities of an event happening must be non-deterministic. So to go back to the electron tunneling example if quantum events were entirely non-deterministic then the tunneling current would be independent of the potential barrier and would also be unable to be predicted. This is not what we observe at all, and thus quantum events are caused on at least some level.
Additionally, in terms of Dawkins wider philosophy there is another problem with saying that there are uncaused events. Scientific empiricism relies on the assumption that the world works in a uniformity of cause and effect. If there are truly causeless events that happen, then the scientific method can tell us nothing about them. More seriously if there is also no a priori way to which events are caused and which are uncaused than the scientific method fails completely, since “this event needs no cause” is a hypothesis that is impossible to invalidate empirically. If natural uncaused events are significant enough to create the universe, is there anything that cannot be a result of them? I can almost hear the creationists saying that fossil record popped into existence recently without cause, and then citing Dawkins as proof that such things can happen.
Since Dawkins seems to elevate scientific empiricism to be the only way to discover truth, to undermine it here to try and disprove Aquinas really seems to be the philosophical equivalent of cutting off your nose to spite your face. The argument, if correct, so seriously undermines the rest of his worldview that it is one that Dawkins simply cannot make.
**On infinite regresses **
The argument that there is indeed an infinite chain of causes and events in the world has IMHO two fatal flaws. The first of these is pointed out by Aquinas himself, if one cares to understand exactly what he is saying. The problem essentially comes from the question “what started the chain of events”? If you say that it extends infinitely back in time, then there is really no starting point. But if you also say that everything is caused by something else, then this is a contradiction. Essentially what you are saying is that the chain of events started itself, which is absurd, since it needs to exist in order to begin to exist. Either there is a start that “just is” without cause, as in the cause of God, or there are uncaused events. It impossible that something could both be pre-exist for eternity and require a preceding cause.
The other problem from a practical viewpoint is that what we know about cosmology suggests that the universe has not existed forever. The big bang requires that there is a zero-point in time, before which there was nothing. Since the cause of an event necessarily is before it (it cannot be after due to all sorts of logical paradoxes) than an infinite chain of cause/events also requires an infinite time scale. The universe that we observe has not existed for infinite time, and thus there is no place for an infinite chain of causal events.
**On the skill of Dawkins original argument **
In this thread there seems to be two questions. Firstly, “did Dawkins intentionally distort Aquinas argument for rhetorical effect?”, and secondly, “is there a good argument against what Aquinas said?”.
In terms of the first question, I would say no, I don’t think that Dawkins is intentionally distorting Aquinas. I think the problem with Dawkins argument both here and in general is that he is simply not trying very hard, and his logic is sloppy as a result. I would like to think that if Dawkins made a serious effort he is capable of properly understanding the issues involved, but what he has written does not give evidence of that.
I think his writing suffers from three problems
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Dawkins is quickly and incredibly dismissive of anything that he disagrees with. He seems to prefer just discounting anything that goes against what he believes rather than interacting with the issue. For instance, see on page 67 where he (indirectly admittedly) calls the Pope John Paul II a hypocrite for accepting Darwinianism, without any discussion of how Catholicism could incorporate evolution. In Dawkins mind it is self evidently true that religion = creationism, and therefore anyone saying otherwise, even someone as learned in Catholic theology as the Pope, must be wrong. Or worse still on page 57 the shockingly dismissive way Dawkins treats the arguments of Stephen Jay Gould on the NOMA principle where he says:
“I simply do not believe that Gould could possibly have meant much of what he wrote in Rocks of Ages”.
In fact in that section Dawkins incredibly dismissive of the large majority of scientists, or indeed anyone who does not share his “science or nothing” epistemology.
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Dawkins is willfully ignorant on matters of theology in general and Christian theology specifically. What is appalling about this is that he appears almost proud of his ignorance of the subject. So for instance on page 33 he writes:
[QUOTE=Dawkins]
Christians should warm to such sophistry. Rivers of medieval ink, not to mention blood, have been squandered over the ‘mystery’ of the Trinity, and in suppressing deviations such as the Arian heresy. Arius of Alexandria, in the fourth century AD, denied that Jesus was consubstantial (i.e. of the same substance or essence) with God. What on earth could that possibly mean, you are probably asking? Substance? What ‘substance’? What exactly do you mean by ‘essence’? ‘Very little’ seems the only reasonable reply. Yet the controversy split Christendom down the middle for a century, and the Emperor Constantine ordered that all copies of Arius’s book should be burned. Splitting Christendom by splitting hairs – such has ever been the way of theology.
[/QUOTE]
The Arian heresy is easy to understand in a nutshell. It is a question over whether Jesus is fully a character of God or not. If yes than Christianity is Trinitarian, if not than it is polytheistic. It is an important question as it is still being argued today. So for instance the Jehovah’s Witnesses are an example of a group that has an Arian rather than Trinitarian view of Jesus. The fact that Dawkins is baffled by this shows that he is just not trying very hard to understand what is being said.
Additionally in his handling of the bible he makes a few quite embarrassing mistakes. One example is on page 253 where he definitely attributes the letter of Hebrews to the apostle Paul, something which very few serious scholars, Evangelical or Liberal do. Probably Dawkins source for his arguments got it wrong, and he simply does not know enough about current biblical scholarship to know the difference. If true than it says little for his ability to argue against Christian theology.
- Specifically with regard to the proofs of Aquinas, and in general in his dismissal of the proofs of God, there is no evidence that he has made any effort to interact with the literature already on the subject. Summa theologica was completed in 1274, after which there has been centuries of debate on the points contained within. In discussing it he doesn’t even mention any other work on the subject. It is as if the proofs exist in a philosophical vacuum. So for instance it might have been nice for him to quote someone who agreed with his points about the proofs. I am sure there is someone he could mention. Without even the smallest reference to any writings on Aquinas, the whole thing comes across to me as just intellectually lazy.
And therein lies the problem with Dawkins’ book. I think to him it is so self evident that religion is false, that serious intellectual work is not needed in interacting with it. How else could Dawkins’ dismiss theology without ever really studying it? How does he know that it is vacuous until he puts in the effort to understand what theologians are saying? In this respect is he any better than the creationist who just knows that evolution is wrong and therefore doesn’t feel the need to study or understand it in order to refute it? Indeed the book itself encourages its readers to simply mock religious people rather than logically argue with them. And ultimately I think that is what Dawkins has produced. A book that is big on rhetoric and condescension, and small on good scholarship or reasoned argument.
Calculon.