When you serve your mother and father it is okay to try to correct them once in a while. But if you see that they are not going to listen to you, keep your respect for them and don't distance yourself from them. Work without complaining.

The only people who cannot change are the most wise and the most stupid.

These are the four abuses: desire to succeed in order to make oneself famous; taking credit for the labors of others; refusal to correct one's errors despite advice; refusal to change one's ideas despite warnings.

Success depends upon previous preparation, and without such preparation there is sure to be failure.

Without that innate sense of human worth, a man cannot long endure adversity, nor can he long enjoy prosperity.

All wisdom is rooted in learning to call things by the right name. When things are properly identified, they fall into natural categories and understanding becomes orderly.

Those who make virtue their profession are the ruin of virtue.