There is the inscription "Know Yourself" at the entrance to the Delphi temple.

In fact, this understanding is valid not only there, but in many parts of the world.

Lao Tzu, thousands of kilometers from the place where this phrase was written, said: He is strong who defeats others, and he who defeats himself is the hero.

Pythagoras answered this situation as follows; Unable to control himself, a person is not free under any circumstances.