We can name God only by taking creatures as our starting point, and in accordance with our limited human ways of knowing and thinking. All creatures bear a certain resemblance to God, most especially man, created in the image and likeness of God. The manifold perfections of creatures - their truth, their goodness, their beauty all reflect the infinite perfection of God. God transcends all creatures. Our human words always fall short of the mystery of God.
Man is by nature and vocation a religious being.
Coming from God, going toward God, man lives a fully human life only if he freely lives by his bond with God. When he listens to the message of creation and to the voice of conscience, man can arrive at certainty about the existence of God, the cause and the end of everything. We really can name God, starting from the manifold perfections of his creatures, which are likenesses of the infinitely perfect God, even if our limited language cannot exhaust the mystery. This is the reason why believers know that the love of Christ urges them to bring the light of the living God to those who do not know him or who reject him. 6 St. Augustine, Conf.