Not life, but good life, is to be chiefly valued. - Socrates

"My advice to you is get married: if you find a good wife you'll be happy; if not, you'll become a philosopher."

"I only know that I know nothing"

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

"There is only one good, knowledge, and one evil, ignorance."

"The only true wisdom is in knowing you know nothing."