To learn is a natural pleasure, not confined to philosophers, but common to all men.
A city is composed of different kinds of men; similar people cannot bring a city into existence.
Between friends there is no need of justice.
There is simple ignorance, which is the source of lighter offenses, and double ignorance, which is accompanied by a conceit of wisdom.
In the works of Nature, purpose, not accident, is the main thing.
Excellence or virtue in a man will be the disposition which renders him a good man and also which will cause him to perform his function well.