To take what you know for what you know, and what you do not know for what you do not know, that is knowledge indeed.

He who conquers himself is the mightiest warrior.

Ability will never catch up with the demand for it.

I saw some piglets suckling their dead mother. After a short while they shuddered and went away. They had sensed that she could no longer see them and that she wasn't like them any more. What they loved in their mother wasn't her body, but whatever it was that made her body live.

Know what you know and know that you don't know what you don't know — that is the characteristic of one who knows.

I do not want a friend who smiles when I smile, who weeps when I weep; for my shadow in the pool can do better than that.

The Master said, “A true gentleman is one who has set his heart upon the Way. A fellow who is ashamed merely of shabby clothing or modest meals is not even worth conversing with.” (Analects 4.9)