Nor will the soul be in the body as form is in matter; for the form
that is engaged in matter is not separable. Moreover, that form
descends upon matter implies the preliminary existence of matter; but
it is the soul that produces form in matter; and therefore the soul
must be distinct from form. Though the soul be not form begotten in
matter, the soul might be a separable form; but this theory would still
have to explain how this form inheres in the body, since the soul is
separable from the body.