1, learn to know the shortcomings, teach to know the difficulties, know the shortcomings, and then react; Advance despite difficulties, and then strive for self-improvement.

2. There is no fish in clear water, and there is no disciple in human observation.

3. Confucius: Don't do to others what you don't want them to do to you.

4, words must be done, actions must be fruitful, and fruits must be believed.

5, learning without thinking is useless, thinking without learning is dangerous.