St. Thomas Aquinas (1225-1272) is fundamentally an Aristotelian and, for some, one of the greatest philosophers and one of the best theologians. His theological writings have become normative of the Catholic Church and his commentaries on Aristotle represent a great cultural resource, which is receiving ever greater recognition today. Being a very Catholic man, he tried to prove the existence of God. But how? Thomas Aquinas recognized that there were people who doubted the existence of God. Because for them logic neither allowed nor explained His existence. Being a devout Christian, he believed in God, but wanted to prove to those who didn't believe that he did. Consequently, Thomas Aquinas presented five proofs of God's existence, based on logic and observation of nature. His first test is based on the idea of ​​a prime mover. He proves this by saying that anything that is in motion must have been set in motion by something else. And then he defines a type of movement as the reduction of something from potentiality to actuality. Affirm that nothing can be both actual and potential with respect to itself...