Therefore the object of the idea constituting the human mind is the body, and the body as it actually exists (II.

xi.).

Further, if there were any other object of the idea constituting the mind besides body, then, as nothing can exist from which some effect does not follow (I.
xxxvi.) there would necessarily have to be in our mind an idea, which would be the effect of that other object (II.

xi.); but (I.Ax.

v.) there is no such idea.