I find it rather boneheaded to write off what Aquinas was saying without examining the context, language being used and questions being worked.
I find it boneheaded to find it boneheaded to write off Aquinas' mostly circular unreasoning and philodeusy.
I think this statement of his says all about what he was
To one who has faith, no explanation is necessary. To one without faith, no explanation is possible.
— Thomas Aquinas
And now... here is some context for you to examine:
There is little of the true philosophic spirit in Aquinas. He does not, like the Platonic Socrates, set out to follow wherever the argument may lead. He is not engaged in an inquiry, the result of which it is impossible to know in advance.
Before he begins to philosophize, he already knows the truth; it is declared in the Catholic faith. If he can find
apparently rational arguments for some parts of the faith, so much the better; if he cannot, he need only fall back on revelation.
The finding of arguments for a conclusion given in advance is not philosophy, but special pleading. I cannot, therefore, feel that he deserves to be put on a level with the best philosophers either of Greece or of modern times.
St. Thomas Aquinas ...in the Summa, ... accepts the idea that
certain animals, spring from the decaying bodies of plants and animals, and declares that they are produced by the creative word of God either actually or virtually. He develops this view by saying, "Nothing was made by God, after the six days of creation, absolutely new, but it was in some sense included in the work of the six days"; and that "even new species, if any appear, have existed before in certain native properties, just as animals are produced from putrefaction."
Summary list of common objections to the Argument from Motion:
A.There seems to be a contradiction in the argument. Premise (2), "Whatever is moved is moved by another," conflicts with the notion of God in this argument as that of something unmoved, i.e., that of the Unmoved Mover. God, then, is an the exception to the truth of premise (2). Nevertheless, cannot God move or act? If God is pure actuality, then it would seem to follow that God can't do anything, for God is already all that God could be. If, then, God is already all that God can be, there's no potential for God to be able to act or be in any way different from what God is. If God is claimed to have a privileged status and not subject to the first premise, then the argument becomes viciously circular.
Summary list of common objections to Thomas' Argument from Cause:
A.There seems to be a contradiction in the argument. The first premise states, "There is an efficient cause for everything, nothing can be the efficient cause of itself." Is, then, God something or nothing? If God is something, then we can ask the question of children, "What caused God?" If God is nothing, then God's existence is not proven. If God is claimed to have a privileged status, then the argument becomes viciously circular.
Summary list of common objections to Thomas' Argument from Necessity:
B.If God is an existent object in the universe, then by premise (1), it is possible for God not to exist. If God is a different kind of existent thing, then the argument commits the fallacy of petitio principii or the circularity of assuming in the premises what is to be proved.
Thomas Aquinas and the Five Ways
The First Way: God, the Prime Mover
With the benefit of modern physics we can get rid of this argument for good. ...
..... This, of course, makes the idea of a Prime Mover absolute nonsense!
There is another, more traditional, objection to the first way. The fundamental principle in the argument is that everything which initiates change must have been initiated in some way itself. This principle, must therefore be applied to the Prime Mover as well. There is no logical reason why we should stop applying that principle at that point. This objection is conclusive. For the argument begins with an observation (that there is motion) and a fundamental principle (that every moving thing is moved by another already moving) which, at least in Thomas' philosophy, seems to be valid. Yet he postulated the existence of The Unmoved Mover that violates the argument's own fundamental premise. The irritating (to believers) question of a naturally skeptical child sums up the main problem with the first way: If God made the world, who made God?
The Second Way: God, the First Cause
The second way looks logically clear and ostensibly convincing. Unfortunately, for the believer, the argument contains a number of flaws which have allowed its complete demolition by philosophers David Hume (1711-1776) and Immanuel Kant (1724-1804).
.....God directs and causes the moment of the decay, although it has no physical cause. But this defence is obviously circular. For the theologians are using the conclusion of the First Cause Argument (that God is the ultimate cause of things) to secure the validity of one of its premises (that every event must have a cause). A perfect example of the fallacy of petitio principii (begging the principle). [14] The second way is therefore unconvincing for the following reasons: it assumes that all sequences must be finite when we have no logical reason for believing so; we have no way of determining which cause exactly is the first cause; it commits the logical fallacy of quantifier reversal; and finally the fundamental assumption, that every event must have a cause, is shown to be untrue by modern physics. The First Cause Argument, the second way of Thomas Aquinas, has been shown the direction of the first, they are both invalid as proofs of God's existence.
The Third Way: God, the Necessary Being
We can now sum up the various problems with the Third Way: the argument, in its basic form is circular, as it assumes the conclusion in one of its premises; the term "necessary being" if it is to be used in a empirical sense boils down to the Second Way, which was already shown to be fallacious, if it is used in the logical sense it reduces to the Ontological Argument, another argument already dismissed as unsound; and finally even if we must admit a necessary existent entity why shouldn't it be the universe itself?. All in all the Cosmological Arguments fail to demonstrate the existence of God.