Socrates

“I am not an Athenian or a Greek, but a citizen of the world.”

“Nothing is to be preferred before justice.”

“False words are not only evil in themselves, but they infect the soul with evil.”

“One should never do wrong in return, nor mistreat any man, no matter how one has been mistreated by him.”

“Bad men live that they may eat and drink, whereas good men eat and drink that they may live.”

“How many things I have no need of!”

“I know nothing except the fact of my ignorance.”

“There is only one good, knowledge, and one evil, ignorance.”

“It would be better for me that multitudes of men should disagree with me rather than that I, being one, should be out of harmony with myself.”

“The only true wisdom is in knowing you know nothing.”