When we know that something exists, it still remains to inquire into the manner of its existence, in order to know what it is. But we cannot inquire into the manner in which God exists. We can inquire only into the manner in which he does not exist, since we cannot know of God what he is, but only what he is not. We must therefore consider how God does not exist, how we know him, and how we name him. The manner in which God does not exist can be shown by excluding what is incompatible with God, such as composition, movement, and the like. We shall therefore inquire into the simple nature of God which repels composition. We shall also inquire into the divine perfection, since the simple natures of corporeal things are imperfect, having parts.

Eight questions are asked concerning the simple nature of God.1. Whether God is a body.2. Whether there is composition of form and matter in God.3. Whether there is composition of the quiddity, essence, or nature of God, and God as subject.4. Whether there is composition of essence and existence in God.5 . Or of genus and difference.6. Or of substance and attribute.7. Whether God is composite in any way, or altogether simple.8. Whether God enters into composition with other things.