The famous sayings from personal practice are as follows:

1. The things in the world are not as detailed as those who hear them, and those who see them are not as good as those who live in them.

2. If you can talk about something, you can do something; if you can do something, you can know something. This is called true knowledge. If you just talk but don't do it, you will end up confused when things happen.

3. A person can only learn to skate after going through the stage of staggering around and making himself look like a fool.

4. Be knowledgeable, think carefully when questioning, discern clearly, and practice diligently. If you don’t climb the mountain, you don’t know how high the sky is. If you are not near a deep stream, you will not know how thick the land is.

5. Only real life can learn, only real life can teach people, and only real life can produce social thoughts.

6. Practice determines theory. Real theory also has the function of leading action.

7. Virtue can be divided into two types: one is the virtue of wisdom, and the other is the virtue of behavior. The former comes from learning, and the latter comes from practice.

8. Actions give rise to difficulties; difficulties give rise to doubts; doubts give rise to hypotheses; hypotheses give rise to tests; tests give rise to assertions; assertions give rise to actions, and this evolves to infinity.

9. What is heard by the ears is not as good as what is seen by the eyes, what is seen by the eyes is not as good as what is practiced by the feet, and what is trampled by the feet is not as good as what is discerned by the hands.

10. I think everyone I know has morals, although I don’t like to ask. I know I have. But I would rather teach others morality every day than practice morality myself. Leave morality to others, this is my motto. Once you give away morality, you will never need it.

11. All unresolved issues that are debated in theory can be completely solved by practice in real life.

12. There are also disadvantages to studying exclusively, so you must get in touch with the real society to make the books you read come alive.

13. How can a person know himself? Not by thinking, but by doing.

14. If you want to have knowledge, you must participate in the practice of changing reality. If you want to know the taste of pears, you have to change pears and eat them yourself.

15. Human beings use cognitive activities to understand things and practical activities to change things; use the former to master the universe and the latter to create the universe.