Thanks EAllusion! Are you able to address the assumption that Aristotle put up a better argument than these?
In the meantime, I think the arguments you quoted are self-contradictory, and rely on a bit of hand-waving. To whit:
The First Way: Argument from Motion
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Therefore nothing can move itself.
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Therefore it is necessary to arrive at a first mover, put in motion by no other; and this everyone understands to be God.
So, nothing can move itself, but it is necessary to arrive at something which does move itself? How is that not an absurd result, and therefor proof that this argument is bankrupt?
The Second Way: Argument from Efficient Causes
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Nothing exists prior to itself.
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Therefore it is necessary to admit a first efficient cause, to which everyone gives the name of God.
So nothing exists prior to itself. Except God. Because we said so.
The Third Way: Argument from Possibility and Necessity (Reductio argument)
We find in nature things that are possible to be and not to be, that come into being and go out of being i.e., contingent beings.
Like what? I don't think we see these things at all. Aquinas surely didn't know that matter and energy are convertible to each other, but there's all kinds of things he didn't know.
Therefore at that time there would have been nothing to bring the currently existing contingent beings into existence.
Therefore, nothing would be in existence now.
Quite an assumption, and unfounded IMHO.
We have reached an absurd result from assuming that every being is a contingent being.
Therefore not every being is a contingent being.
Therefore some being exists of its own necessity, and does not receive its existence from another being, but rather causes them. This all men speak of as God.
What if
everything exists of its own necessity? Hmm, never thought of that.
Mormonism ceased being a compelling topic for me when I finally came to terms with its transformation from a personality cult into a combination of a real estate company, a SuperPac, and Westboro Baptist Church. - Kishkumen