Do not treat others as you yourself would not be treated.
Even if I could, I would not exahnge their virtues for my own. And that is why they are intent on learning from me.
To know your faults and be able to change is the greatest virtue.
If a man is not good, what has he to do with the rules of propriety? If he is not good, what has he to do with music?
He who knows all the answers has not been asked all the questions.
Excess weakens the spirits.