If it could be conceived, it would necessarily have to be conceived as existent; but this (by the first part of this proof) is absurd.

Therefore, besides God no substance can be granted or conceived.

Q.E.D.
Corollary I .-- Clearly, therefore: 1.

God is one, that is (by Def.

vi.) only one substance can be granted in the universe, and that substance is absolutely infinite, as we have already indicated (in the note to Prop.