1, no doubt you can't see the truth. -Li Siguang

2. People who don't ask are always with ignorance. East Africa

3. Questioning customs from all aspects is an inevitable development stage for everyone with high ideological level. Emerson

4, the key to open all science, there is no question mark of objection. -Balzac

People who have no doubt about reading must be taught to have doubts, but those who have doubts must have no doubts. This is progress. -Zhu

6, the ear has no bottom, you can hear it from morning till night. -Africa

7. It is more important to ask questions than to solve them. -Einstein

8. Skepticism is an important part of scientific spirit. -Zhou

9. People who are good at asking questions are like attacking wood. They are easy at first, then self-sufficient and long-lasting. People who are not good at asking questions are the opposite. -Yukime

10, people who are good at doubting don't doubt what others doubt, and those who doubt don't doubt. -Fang Yizhi

1 1. Teachers should question and friends should analyze doubts. Li Xing

12, thinking starts with questions and surprises. -Aristotle