The only people who cannot change are the most wise and the most stupid.
When frying small fish, disturb them little.
To learn without thinking is labour in vain, to think without learning is desolation.
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?
If you yourself desire establishment, then help others to get establishment; if you yourself want success, then help others to attain success.
Don't be concerned about others not appreciating you. Be concerned about your not appreciating others.