Diderot’s famous sayings are as follows:

1. Without purpose, nothing can be accomplished. If your purpose is small, you can't accomplish anything big.

2. If morals deteriorate, taste will inevitably deteriorate.

3. If the truth has achieved full victory among a few people, and these few people are excellent, they should be accepted. For it is not the nature of truth to please the majority.

4. Truth likes criticism, because after criticism, truth will win. Fallacy fears criticism, because after criticism, fallacy will fail.

5. Truth and virtue are two close friends of art. Do you want to be a writer, a critic? Please be a virtuous person first.

6. The benefits of error are temporary, while the benefits of truth are permanent.

7. I regard the vast field of science as a vast wilderness, with some dark places and some light places scattered in it. The purpose of our work should be to either enlarge the boundaries of the bright place, or to add centers of light in the wilderness.

8. Young people talk about what they are doing, old people talk about what they have done in the past, and fools talk about what they want to do.

9. People who have no sense of truth, goodness, and beauty are called superstitious.

10. Sensitivity is never a good quality of great geniuses. What great geniuses like is accuracy.