Qian Qisen’s famous sayings are as follows:

1. One of the reasons why the scientific community is famous all over the world is that they criticize themselves and deny themselves every day.

2. The greatest happiness of a scholar is that more and more unsolved truths flow through his mind in the dark night.

3. When you take a detour, you can sometimes learn not to do any evil.

4. Only discoveries made through exhaustion are the only reliable discoveries.

5. People cannot be too rich, and machines cannot be too advanced.

6. I believe that scientific activities should always remain inherently challenging, so as to ensure that new problems are constantly discovered and new knowledge is created.

7. Weapons of mass destruction are a failure of human thinking and civilization.

8. The progress of science and technology requires not only people’s efforts, but also their composure, patience, and long-term persistence.

9. Scientific progress always goes through a process of continuous improvement and innovation.

10. Why is science necessary? Because ignorance cannot be tolerated.

11. Human wisdom cannot be used only to make weapons.

12. Although scientific progress will not solve all human problems, there are no human problems that cannot be solved without scientific progress.

13. Part of wisdom is knowing what you cannot do.

14. A real scientist is always experimenting, exploring, and innovating.

15. If you do not regard every failure as a valuable exploration, then failure will be meaningless.