1. The same is true for "difficulty". Facing the cliffs, you won't be able to see a crack in a hundred years, but with an axe, you can advance inch by inch, and you have to advance foot by foot, constantly. With accumulation, leaps and bounds will come, and breakthroughs will follow. ---Hua Luogeng

2. I really want to invent a trait or machine with such terrifying large-scale destructive power that war will become impossible forever. ---Nobel

3. Only by obeying nature can we control nature. --- Bacon

4. The ocean of truth lets all the undiscovered things lie before my eyes for me to explore. ---Newton

5. Anyone who takes the truth lightly in small matters is also untrustworthy in big matters. ---Einstein

6. 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

7. A scientist should consider the comments of later generations, not the insults or praises at the time. ---Pasteur

8. While we are enjoying the huge benefits that other people's inventions have brought to us, we must also be willing to use our own inventions to serve others. ---Franklin

9. My philosophy of life is work. I want to reveal the mysteries of nature and benefit mankind. ---Edison