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

(2) Thinking starts with questions and surprise. ——Aristotle

(3) He who does not doubt when he is doubtful has never learned; learning requires doubt. ——Zhang Zai

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

(5) The key to all science is undoubtedly the question mark. ——Balzac

(6) It is never too late to correct your mistakes. ——Shakespeare

(7) Who has no fault? If you can change your past, there is no greater good. ——"Zuo Zhuan? The Second Year of Xuangong"

(8) No one is perfect, everyone will make mistakes, as long as they correct themselves, everything will be good.

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

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

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

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

5. Those who have no doubts in reading must learn to have doubts, and those who have doubts must have no doubts. This is the only way to make progress. ——Zhu Xi

6. The ears have no bottom and can be heard from morning to night. ——Africa

7. 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

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

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

10. A suspicious person does not doubt what others suspect, but doubts what others do not doubt. ——Fang Yizhi

11. Teachers use doubts, and friends use doubts. ——Li Xing

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

13. Raising questions is more important than solving them. ——Einstein

14. There is no doubt that there will be doubts in learning, doubts will lead to progress, small doubts will lead to small progress, and great doubts will lead to great progress. ——Lu Jiuyuan Song

15. The problem is the midwife, it can help the birth of new ideas. ——Socrates

16. Scholars must first doubt. ——Cheng Yi

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

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

19. Those who do not doubt when there is doubt have never learned; learning requires doubt. ——Zhang Zai

20. 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

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

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