The idea, which constitutes the actual being of the human mind, is not simple, but compounded of a great number of ideas.
Proof .-- The idea constituting the actual being of the human mind is the idea of the body (II.

xiii.), which (Post.

i.) is composed of a great number of complex individual parts.

But there is necessarily in God the idea of each individual part whereof the body is composed (II.viii.

Coroll.); therefore (II.