I will not allow the Athenians to sin twice against philosophy.

Personal beauty requires that one should be tall; little people may have charm and elegance, but beauty-no.

A good style must, first of all, be clear. It must not be mean or above the dignity of the subject. It must be appropriate.

Happiness does not consist in amusement. In fact, it would be strange if our end were amusement, and if we were to labor and suffer hardships all our life long merely to amuse ourselves.... The happy life is regarded as a life in conformity with virtue. It is a life which involves effort and is not spent in amusement.

Friendship is a single soul dwelling in two bodies.

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

To know what virtue is is not enough; we must endeavor to possess and to practice it, or in some other manner actually ourselves to become good.