To practice five things under all circumstances constitutes perfect virtue; these five are gravity, generosity of soul, sincerity, earnestness, and kindness.

A good man will certainly also possess courage; but a brave man is not necessarily good.

When nature exceeds culture, we have the rustic. When culture exceeds nature, we have the pedant.

The master said, 'Quietly to store up knowledge in my mind, to learn without flagging, to teach without growing weary, these present me with no difficulties.'

The man who moves a mountain begins by carrying away small stones.

Do not worry if others do not understand you. Instead worry if you do not understand others.

It is not the failure of others to appreciate your abilities that should trouble you, but rather your failure to appreciate theirs.