"Know yourself” is Socrates’ imperative. Why? There is no perfect life. No one is infallible. Everyone makes mistakes because some of our beliefs and assumptions are false. Just because we think it or believe it doesn’t mean it is true. Yet, beliefs are neither proof nor evidence, but only claims. So, we can’t trust everything we believe to be true. But, still we do. False certainties lead us away from truth and virtue. Which path leads us to wisdom?