1. Scholars must first be suspicious. ——Cheng Yi

2. The spirit of skepticism is an important part of the scientific spirit. ——Zhou Guangzhao

3. A person who is good at asking questions is like attacking a strong tree. He will first change it, and then he will understand it. After a long time, he can explain it to each other. Those who are not good at asking will do the opposite. ——"Xue Ji"

4. You cannot see the truth without doubting. ——Li Siguang

5. If your ears have no bottom, you can hear from morning to night. ——Africa

6. The key to unlocking all science is undoubtedly the question mark. ——Balzac

7. Questioning is the first step towards philosophy. —— Diderot

8. Question, rather than question, "A true singer can sing the silence in people's hearts." —— Chai Jing

9. There is no doubt that there will be doubts in learning. Doubts will lead to progress, small doubts will lead to small progress, and big doubts will lead to great progress. ——Lu Jiuyuan (Song Dynasty)

10. Those who have no doubts in reading must learn to have doubts, and those who have doubts must have no doubts. Only by reaching this point can we make progress. ——Zhu Xi

11. Those who are good at doubting do not doubt what others suspect, but doubt what others do not doubt. ——Fang Yizhi

12. People who don’t ask will always be together with ignorance. ——East Africa

13. Problems are midwives, they help the birth of new ideas. ——Socrates

14. Those who do not doubt when they are doubtful have never learned; learning requires doubt. ——Zhang Zai

15. Doubt is the beginning of thinking and the end of learning. ——Confucius

16. Teachers use doubts, and friends use doubts to resolve. ——Li Xing

17. Thinking starts with questions and surprises. ——Aristotle

18. Asking questions is more important than solving them. ——Einstein

19. Deep in the human soul, there is a deep-rooted need, which is to hope that oneself is a discoverer, researcher, and explorer. In the spiritual world of children, this need is particularly strong. ——Suhomlinsky

20. Questioning customs from all aspects is an inevitable stage of development for every person with a high level of thinking. ——Emerson

21. A person who is eager to ask questions is only five kinds of fools; a person who is ashamed to ask questions will be a fool for life. ——Anonymous

1. Deep in the human soul, there is a deep-rooted need, which is to hope that oneself is a discoverer, researcher, and explorer. In the spiritual world of children, this need is particularly strong. ——Suhomlinsky

2. Questioning customs from all aspects is an inevitable stage of development for every person with a high level of thinking. ——Emerson

3. A person who is eager to ask questions is only five kinds of fools; a person who is ashamed to ask questions will be a fool for life. ——Anonymous

4. A person who is good at asking questions is like attacking a strong tree. He will first understand the easy part, then the easy part, and then explain it to each other for a long time. Those who are not good at asking will do the opposite. ——"Xue Ji"

5. Problems are midwives, they can help the birth of new ideas. ——Socrates

6. He who does not doubt when there is doubt has never learned; learning requires doubt. ——Zhang Zai

7. Doubt is the beginning of thinking and the end of learning.

——Confucius