One of the penalties for refusing to participate in politics is that you end up being governed by your inferiors.

The life which is not examined is not worth living.

He who is of a calm and happy nature, will hardly feel the pressure of age

One trait in the philosopher's character we can assume is his love of the knowledge that reveals eternal reality, the realm unaffected by change and decay.

Of all the things of a man's soul which he has within him, justice is the greatest good and injustice the greatest evil.

Mathematics is like draughts in being suitable for the young, not too difficult, amusing, and without peril to the state.

As there are misanthropists or haters of men, so also are there misologists, or haters of ideas.