The famous sayings about introspection are as follows:

1. Clean yourself by washing yourself in the clear spring. ——Han Yu's "Preface to Farewell to Li Yuan's Return to Pangu"

2. People cannot live without criticism and self-criticism, otherwise a person cannot make progress.

3. We have gone through many detours, and entrepreneurs and managers of enterprises must reflect deeply on this. ——Wang Xuan

4. I have to examine myself three times every day: Are I being unfaithful to others? Make friends but don’t believe it? Are you not used to it? ——Zengzi

5. Be careful, even when you are alone, do not say bad words or do bad things, but learn to be more shameful in front of yourself than others. ——Democritus

6. The more incompetent a person is, the more he likes to find fault with others. ——Ireland

7. I can clearly count the stars in the sky, but I can’t see the soot on my face. ——Malaysia

8. You know where your shoes are tight. ——Spain

9. Only when you have suffered deeply can you understand the pain of others, so it is difficult to reflect on yourself. ——Xi Juan's "Lost"

10. It's never too late to correct your mistakes when you know they are wrong. ——Shakespeare

11. Only among people can you know yourself. ——Germany

12. The starting point of success is self-analysis, and the secret of success is self-reflection. ——Chen Anzhi

13. Everyone knows where shoes squeeze the feet. ——Latin America

14. If you want to understand yourself, it is best to ask others. ——Japan

15. Reflection is a mirror that can clearly show our mistakes and give us the opportunity to correct them. ——Heine

16. Complacency, arrogance and credulity are the three hidden dangers of life. ——Balzac

17. A person washes his heart to remove evil, just like bathing his body to remove dirt. ——Zhu Xi's "Annotations to the Four Books·University"

18. If you want me to write my own history, I will write about my mistakes. ——Zhou Enlai

19. You know your own appetite. ——Soviet Union

20. Self-respect, self-consciousness, and self-control, these three can lead to the noble realm of life.

——Tennyson