A man went to the Parthenon and asked, "Who is the wisest man in the world?" The temple answered, "Socrates, who lives in Athens, is the wisest man." He met Socrates and asked, "Are you really the Socrates who is said to be the wisest man in the world?" Socrates answered, "I know nothing. If there's one thing I know, it's that I know nothing." He returned to the Parthenon and demanded, "Socrates said he knew nothing. How can he be the wisest man in the world?" The temple replied, "People don't know that they know nothing. But doesn't Socrates know that one thing?"