Description: The phrase "I know that I know nothing" or "I know one thing: that I know nothing" sometimes called the Socratic paradox, is a well-known saying that is derived from Plato's account of the Greek philosopher Socrates. This saying is also connected and/or conflated with the answer Socrates is said to have received from Pythia, the oracle of Delphi, in answer to the question "who is the wisest man in Greece?".