St Thomas Aquinas asks “Is the existence of God self evident?”. St Thomas actually denies that the existence of God is ‘self evident’. Remember the great philosophers Socrates, Apollo, and Aristotle all believe in a God because they could reason something greater than they existed. So does that prove “God’s Existence”? St Thomas reasons that only through ‘Divine Revelation’ can the true ‘Existence of God’ can be known. He objectively defends this by demonstrating the Arguments: “Motion”, “Efficient Causes”, “Possibility”, “Degrees of Being”, and “Design”. All this can be found in his Summa Theologica STh I, q. 2, a. 3.