Friendship is nothing else than an accord in all things, human and divine, conjoined with mutual goodwill and affection.

Justice renders to every one his due.

Let the punishment match the offense.

Even the ablest pilots are willing to receive advice from passengers in tempestuous weather.

What nobler employment, or more valuable to the state, than that of the man who instructs the rising generation?

What is morally wrong can never be advantageous, even when it enables you to make some gain that you believe to be to your advantage. The mere act of believing that some wrongful course of action constitutes an advantage is pernicious.

In nothing do men more nearly approach the gods than in giving health to men.