Saint Thomas Aquinas' Five Proofs of God's Existence

St. Thomas, in his Summa Theologica, gives five separate proofs for the existence of God. Unlike St. Anselm's proof, which deals with concepts, Aquinas' proofs rely on empirical facts - what we can observe. In these proofs we can see the influence of Aristotle and his doctrine of the Four Causes.

l. The Proof from Motion

We observe motion all around us. Whatever is in motion now was at rest

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