All virtue is summed up in dealing justly.

Pleasure causes us to do base actions and pain causes us to abstain from doing noble actions.

All art, all education, can be merely a supplement to nature.

Before you heal the body you must first heal the mind

In a polity, each citizen is to possess his own arms, which are not supplied or owned by the state.

Doubt is the beginning of wisdom

[the virtues] cannot exist without Prudence. A proof of this is that everyone, even at the present day, in defining Virtue, after saying what disposition it is [i.e. moral virtue] and specifying the things with which it is concerned, adds that it is a disposition determined by the right principle; and the right principle is the principle determined by Prudence.