I was discussing the basis of religion with a friend at a party. He is a serious theologian and a born again Christian. When the subject of existence of God came up, my friend said that the best argument was made by Saint Thomas Aquinas in his “The Five Ways”. I decided that it is best to go to the source and evaluate it.
St. Thomas was a pretty good logician, but the unscientific and erroneous beliefs held in his time makes many of his conclusions irrelevant now that we know the universe better. St. Thomas used the knowledge of the ancients, mainly that of of Aristotle to form his worldview. He did not have the benefit of modern science. The discoveries of DesCartes, Bacon, Newton, Einstein and other modern thinkers and experimenters had not been made.