One citizen differs from another, but the salvation of the community is the common business of them all. This community is the constitution; the virtue of the citizen must therefore be relative to the constitution of which he is a member.

A vivid image compels the whole body to follow.

The proof that you know something is that you are able to teach it

When you are lonely, when you feel yourself an alien in the world, play Chess. This will raise your spirits and be your counselor in war

In [the soul] one part naturally rules, and the other is subject, and the virtue of the ruler we maintain to be different from that of the subject; the one being the virtue of the rational, and the other of the irrational part. Now, it is obvious that the same principle applies generally, and therefore almost all things rule and are ruled according to nature.

All persons ought to endeavor to follow what is right, and not what is established.

Therefore, the good of man must be the end of the science of politics.