1． Isn’t it true that one should learn and practice it from time to time? Wouldn’t it be great to have friends from far away? Isn't it a gentleman who doesn't know something but doesn't get upset?

Explanation Confucius said: "Isn't it very pleasant to have learned and review and practice from time to time? Isn't it very pleasant to have like-minded people coming from afar? I don't resent people who don't understand me. , Angry, isn’t he also a virtuous gentleman? ”

2. A gentleman who has nothing to eat and seek to be satisfied, and who has no desire to live in peace, who is sensitive to things and careful in his words, is Taoist and upright, and he can be said to be eager to learn.

Explain that a gentleman does not require food to be full, nor does residence require comfort. He is diligent and agile in his work, but cautious in his words.

3． To know is to know, and to not know is to know. This is knowledge.

Explain that knowing means knowing, and not knowing means not knowing. This is smart.

4. If you learn without thinking, you will be in vain; if you think without learning, you will be in danger.

Explain that if you only study without thinking, you will feel confused and at a loss; if you just think without learning, you will be confused and gain nothing.

5. If you review the past and learn the new, you can become a teacher. (Review the past and learn the new)

Explanation: Reviewing the knowledge you have learned can gain new insights and experiences. With this, you can become a teacher.