True knowledge exists in knowing that you know nothing. - Socrates

"Employ your time in improving yourself by other men's writings so that you shall come easily by what others have labored hard for."

"I only know that I know nothing"

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

"Know thyself."

"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."