Book 10
1.66
For we cannot think of itIt = the soul, the logical subject, the neuter replacing the more appropriate feminine pronoun. as sentient, except it be in this composite whole and moving with these movements; nor can we so think of it when the sheaths which enclose and surround it are not the same as those in which the soul is now located and in which it performs these movements. [He says elsewhere that the soul is composed of the smoothest and roundest of atoms, far superior in both respects to those of fire; that part of it is irrational, this being scattered over the rest of the frame, while the rational part resides in the chest, as is manifest from our fears and our joy; that sleep occurs when the parts of the soul which have been scattered all over the composite organism are held fast in it or dispersed, and afterwards collide with one another by their impacts. The semen is derived from the whole of the body.]
