One who is injured ought not to return the injury, for on no account can it be right to do an injustice.
True knowledge exists in knowing that you know nothing.
Every action has its pleasures and its price.
Wars and revolutions and battles are due simply and solely to the body and its desires.
The perfect human being is all human beings put together, it is a collective, it is all of us together that make perfection.
Wisdom is knowing how little we know.