1. What you have learned on paper will eventually make you realize it, but you will definitely know that this matter must be carried out.

2. The purpose of learning is all about application, the unity of knowledge and action, and true knowledge through practice.

3. Seeing once is better than hearing a hundred times.

4. The truth of science should not be found in the dusty books of ancient saints, but should be found in experiments and theories based on experiments. True philosophy is written in the greatest book that is always open before our eyes. This book is the universe, nature itself, and one must read it. Author: Galileo

5. The Chinese have an old saying: "If you don't enter the tiger's den, you won't get the tiger's cubs." This sentence is true for people's practice and is also true for epistemology. It is impossible to understand without practice. Author: Mao Zedong

6. Even if he is slow and unstoppable, even if he falls behind and even if he fails, he will definitely achieve his goal. ——Lu Xun

7. Everything must be done in a down-to-earth manner, not in fantasies, not in vain, but in a down-to-earth manner. If you study with this attitude, you can understand the truth, and if you do things with this attitude, you can achieve success. ——Li Dazhao

8. Action is the only way to knowledge. ——Bernard Shaw

9. There is nothing of real value in the world that can be obtained without hard work. —— Edison

10. We learn to think in the process of our labor. As a result of our labor, we understand the mystery of the world, and then we truly change our lives. —— Gorky