1. What you know is what you know, and what you don't know is what you know.

Translation: To understand is to understand, and to not understand is to not understand. This is true wisdom.

2, sensitive and eager to learn, not ashamed to ask questions.

translation: mortal people are more difficult to learn, and those who are high are more ashamed to ask questions.

3. Learning without thinking is useless, and thinking without learning is dangerous.

Translation: Just studying without thinking will lead to meaning, confusion and no gain, while thinking without learning will lead to mental fatigue and no gain.

Confucius advocated that "knowing is knowing, and not knowing is not knowing", and he took an attitude of keeping what he didn't know, so people below average intelligence certainly couldn't know everything. It is an honest attitude and the smartest attitude to admit that you know something and don't know something, except for the mysterious things.

Extended materials:

A reading method advocated by Confucius. If you read blindly without thinking, you will be led by books and lose your mind. The so-called belief in books is better than no books, which means this. And if you dream blindly but don't study and study hard, you will eventually build a tower on the sand and get nothing. Learning and thinking are complementary and indispensable. Only by combining learning and thinking can we learn practical and useful knowledge.

Kant, a western philosopher, also said that "perceptual ignorance is blind, while intellectual ignorance is empty." This is strikingly consistent with Confucius' "learning without thinking is useless, thinking without learning is dangerous". It can be seen that the fundamental principles of human learning and acquisition of knowledge are often the same, no matter how different regions and races are.