xi.
Coroll.), the human mind does not involve an adequate knowledge of the human body.

Q.E.D.
PROP.XXV.

The idea of each modification of the human body does not involve an adequate knowledge of the external body.
Proof .-- We have shown that the idea of a modification of the human body involves the nature of an external body, in so far as that external body conditions the human body in a given manner.
But, in so far as the external body is an individual, which has no reference to the human body, the knowledge or idea thereof is in God (II.

ix.), in so far as God is regarded as affected by the idea of a further thing, which (II.

vii.) is naturally prior to the said external body.