All I know is that I do not know anything

I call that man idle who might be better employed.

'Wars, factions, and fighting,' said Socrates as he looked forward from his last hour, 'have no other origin than this same body and its lusts... We must set the soul free from it; we must behold things as they are. And having thus got rid of the foolishness of the body, we shall be pure and hold converse with the pure, and shall in our own selves have complete knowledge of the Incorruptible which is, I take it, no other than the very truth.

The soul, like the body, accepts by practice whatever habit one wishes it to contact.

Are you not ashamed of heaping up the greatest amount of money and honor and reputation, and caring so little about wisdom and truth and the greatest improvement of the soul?

If the whole world depends on today's youth, I can't see the world lasting another 100 years.

Knowing thyself is the height of wisdom.