The life of which meaning one never ponders is not worth living
True knowledge exists in knowing that you know nothing. And in knowing that you know nothing, that makes you the smartest of all.
Are not all things which have opposites generated out of their opposites?
May I consider the wise man rich, and may I have such wealth as only the self-restrained man can bear or endure.
I know one thing, that I know nothing.
A free soul ought not to pursue any study slavishly, for nothing that is learned under compulsion stays with the mind.