fidei, the light of faith. Revelation is received through faith, but that is not to say there is no valid rational approach to the mystery of God. This distinction between the natural and the revealed knowledge of God is an elementary one, but Thomas makes it more sophisticated in a way that takes us to the heart of the matter in hand: God and creation. For Thomas, metaphysical knowledge reaches out to God thanks to analogical reasoning based on what is common to both created being and uncreated