r mind an idea,
which would be the effect of that other object (II. xi.); but
(I. Ax. v.) there is no such idea. Wherefore the object of our
mind is the body as it exists, and nothing else. Q.E.D.

Note.--We thus comprehend, not only that the human mind is
united to the body, but also the nature of the union between mind
and body. However, no one will be able to grasp this adequately
or distinctly, unless he first has adequate knowledge of the
nature of our body. The propositions we have advanced hitherto
have been entirely general, applying not more to men than to
other individual things, all of which, though in different
degrees, are animated.[3] For of everything there is necessarily
an idea in God, of which God is the cause, in the same way as
there is an idea of the human body; thus whatever we have
asserted of the idea of the human body must necessarily also be
asserted of the idea of everything else. Still, on the other
hand, we cannot deny that ideas, like objects, differ one from
the other, one being more excellent than another and containing
more reality, just as the object of one idea is more excellent
than the object of another idea, and contains more reality.

[3] "Animata"

Wherefore, in order to determine, wherein the human mind
differs from other things, and wherein it surpasses them, it is
necessary for us to know the nature of its object, that is, of
the human body. What this nature is, I am not able here to
explain, nor is it necessary for the proof of what I advance,
that I should do so. I will only say generally, that in
proportion as any given body is more fitted than others for doing
many actions or receiving many impressions at once, so also is
the mind, of which it is the object, more fitted than others for
forming many simultaneous perceptions; and the more the actions
of the body depend on itself alone, and the fewer other bodies
concur with it in action, the more fitted is the mind of which it
is the object for distinct comprehension. We may thus recognize
the superiority of one mind over others, and may further see the
cause, why we have only a very confused knowledge of our body,
and also many kindred questions, which I will, in the following
propositions, deduce from what has been advanced. Wherefore I
have thought it worth while to explain and prove more strictly my
present statements. In order to do so, I must premise a few
propositions concerning the nature of bodies