1. If we admit failure too readily, we may not realize that we are very close to being right. (Karl Popper) (UK)

2. The same is true for "difficulty". Facing a cliff, you can't see a crack in a hundred years, but you can use an ax to chisel it, inch by inch. You have to advance one foot at a time, keep accumulating, leaps will come, and breakthroughs will follow. ---Hua Luogeng (China)

3. I really want to invent a trait or machine with such terrible large-scale destructive power that war will become impossible forever. ---Nobel (Sweden)

4. Only by obeying nature can we control nature. --- Bacon (UK)

5. The ocean of truth lets all things undiscovered lie before my eyes for me to explore. ---Newton (UK)

6. The scientific spirit is a powerful force that promotes social progress. ---Zhou Haizhong (China)

7. The true scientific spirit must be developed from correct criticism and self-criticism. Real scientific results must stand the test of facts. ---Li Siguang (China)

8. The benefits of fallacy are temporary, while the benefits of truth are permanent; when truth has drawbacks, these drawbacks will be eliminated soon, while the drawbacks of fallacy will Always with the fallacy. --- Diderot (France)

9. Anyone who takes the truth lightly in small matters is also untrustworthy in big matters. ---Einstein (USA)

10. Man's bounden duty is to have the courage to explore the truth. ---Copernicus (Poland)

11. I don’t know what people in the world think of me. But I think of it this way: I seem to be a child playing on the sea, sometimes finding a smooth stone, sometimes finding a beautiful shell and being happy about it. Despite this, the ocean of truth mysteriously unfolds before us. ---Newton (UK)

12. Scientific inspiration can never come by waiting. If there are any accidental opportunities for discoveries in the field of science, then this kind of "accidental opportunity" can only be given to those who are prepared, to those who are good at independent thinking, and to those who have a perseverance spirit. To lazy people. ---Hua Luogeng (China)

13. A scientist should consider the comments of later generations, not the insults or praises at the time. ---Pasteur (France)

14. We are enjoying the huge benefits that other people's inventions have brought to us, and we must also be willing to use our own inventions to serve others. ---Franklin (USA)

15. My philosophy of life is work. I want to reveal the mysteries of nature and benefit mankind. ---Edison (USA)

16. I have never made an accidental invention in my life. All my inventions are the result of careful consideration and rigorous testing. ---Edison (USA)

17. Developing the general ability to think independently and judge independently should always be given top priority, rather than the acquisition of professional knowledge. If a person masters the basic theories of his subject and learns to think and work independently, he will surely find his own path and will be better off than someone whose training consists mainly of acquiring detailed knowledge. Will be better able to adapt to progress and change. ---Einstein (USA)

18. All reasoning must be derived from observation and experiment. ---Galileo (Italy)

19. Learn to do the rough work in science. Study facts, compare facts, and accumulate facts. ---Pavlov (Russia)

20. My most important discoveries were inspired by failure. ---David (UK)

21. Thank God for not making me a dexterous craftsman. Some of my most important discoveries were inspired by failure. ---David (UK)

22. With the help of science, people can correct defects in nature.

---Mechnikov (Russia)

23. Respect but not superstitious authority, pursue but not monopolize the truth. ---Zhou Haizhong (China)

24. I love my teacher, but I love the truth even more. ---Aristotle (Greece)

25. To love science is to love truth. Therefore, honesty is the main virtue of scientists. ——Feuerbach (Germany)