1. He is sensitive and eager to learn, and he is not ashamed to ask questions. This is why he is called literary.

2. If you are a three-person person, you must have a teacher. Choose the good ones and follow them, and change the bad ones.

3. If you hear the Tao in the morning, you will die in the evening.

4. If you review the past and learn the new, you can become a teacher.

5. To study alone without friends is to be lonely and ill-informed.