The understanding of mathematics is necessary for a sound grasp of ethics.

All of the wisdom of this world is but a tiny raft upon which we must set sail when we leave this earth. If only there was a firmer foundation upon which to sail, perhaps some divine word.

Antiphon, as another man gets pleasure from a good horse, or a dog, or a bird, I get even more pleasure from good friends. And if I have something good, I teach it to them, and I introduce them to others who will be useful to them with respect to virtue. And together with my friends I go through the treasures of wise men of old which they left behind written in books, and we peruse them. If we see something good, we pick it out and hold it to be a great profit, if we are able to prove useful to one another.

In every sort of danger there are various ways of winning through, if one is ready to do and say anything whatever.

Where there is reverence there is fear, but there is not reverence everywhere that there is fear, because fear presumably has a wider extension than reverence.

Aren't you ashamed to be concerned so much about making all the money you can and advancing your reputation and prestige, while for truth and wisdom and the improvement of your souls you have no thought or car?

You are wrong, sir, if you think that a man who is any good at all should take into account the risk of life or death; he should look to this only in his actions, whether what he does is right or wrong, whether he is acting like a good or a bad man.