The hardest victory is the victory over self.

Men become builders by building and lyreplayers by playing the lyre; so too we become just by doing just acts, temperate by doing temperate acts, brave by doing brave acts.

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.

The ultimate end...is not knowledge, but action. To be half right on time may be more important than to obtain the whole truth too late.

It is no easy task to be good.

It is no part of a physician's business to use either persuasion or compulsion upon the patients.

The angry man wishes the object of his anger to suffer in return; hatred wishes its object not to exist.