Knowing what you don't know

Socrates was named the "wisest man alive" by the Delphi oracle. Which not only confused Athenians, because the guy was acting like a homeless person, but Socrates himself. He knew that his wisdom is limited, but he also believed the gods could not lie. So his solution was to say "I know that I know nothing"

Socrates meant that only knowing the limitations of knowledge, you can transcend. You need to understand the limits of your cognition so you can evolve.