Famous aphorisms that lead to true knowledge through practice:

1. If you don’t climb the mountain, you won’t know how high the sky is; if you don’t enter the deep valley, you won’t know the depth of the earth.

2. Practice determines theory. Real theory also has the function of leading action. ——Zou Taofen (middle)

3. Coming from China, truth comes from practice.

4. All true knowledge originates from direct experience.

5. Use theory to promote practice, and use practice to revise or supplement theory. ——Liao Mosha (middle)

6. If you don’t climb the mountains, you won’t climb the plains.

7. Every mess must have an end, and everything must happen for a reason.

8. If you want to know the taste of pears, you have to taste them yourself.

9. Don’t brag or belittle yourself. Your own actions are the most convincing.

10. Just one theoretical proof can impress me more than fifty facts. ——Diderot