Now do you think one can acquire any appreciable knowledge of the nature of the soul without knowing the nature of the whole man?

If Hippocrates the Asclepiad is to be trusted, one cannot know the nature of the body, either, except in that way.

He is right, my friend; however, we ought not to be content with the authority of Hippocrates, but to see also if our reason agrees with him on examination.

I assent.

Then see what