Socrates

"Are you not ashamed of caring so much for the making of money and for fame and prestige, when you neither think nor care about wisdom and truth and the improvement of your soul?"

"The unexamined life is not worth living."

"I cannot teach anybody anything. I can only make them think"

"If a man comes to the door of poetry untouched by the madness of the Muses, believing that technique alone will make him a good poet, he and his sane compositions never reach perfection, but are utterly eclipsed by the performances of the inspired madman."

"Beware the barrenness of a busy life."

"Are you not ashamed of caring so much for the making of money and for fame and prestige, when you neither think nor care about wisdom and truth and the improvement of your soul?"

"The unexamined life is not worth living."

"The greatest blessing granted to mankind come by way of madness, which is a divine gift."

"The beginning of wisdom is the definition of terms."

"Be slow to fall into friendship; but when thou art in, continue firm and constant."