The Delphic Oracle said I was the wisest of all the Greeks. It is because that I alone, of all the Greeks, know that I know nothing.

I know that I know nothing.

If you will take my advice you will think little of Socrates, and a great deal more of truth.

The hour of departure has arrived and we go our ways; I to die, and you to live. Which is better? Only God knows.

Why do you wonder that globetrotting does not help you, seeing that you always take yourself with you? The reason that set you wandering is ever at your heels.

Pride divides the men, humility joins them.

I prefer to be refuted than to refute, for it is a greater good for oneself to be freed from the greatest evil than to free another.