[this element], the seat of the appetites and of desire in general, does in a sense participate in principle, as being amenable and obedient to it

Friendship is communion.

It is our choice of good or evil that determines our character, not our opinion about good or evil.

That in the soul which is called mind (by mind I mean that whereby the soul thinks and judges) is, before it thinks, not actually any real thing. For this reason it cannot reasonably be regarded as blended with the body

It is of the nature of desire not to be satisfied, and most men live only for the gratification of it.

Happiness, then, is found to be something perfect and self-sufficient, being the end to which our actions are directed.

The male has more teeth than the female in mankind, and sheep and goats, and swine. This has not been observed in other animals. Those persons which have the greatest number of teeth are the longest lived; those which have them widely separated, smaller, and more scattered, are generally more short lived.