I save myself three times a day. -Confucius

The hardest thing in life is to know yourself. -tellez

4, knowing mistakes can be changed, and goodness is great. -"Zuo zhuan"

5. Know yourself. -The Temple of Delphi in Greece

6. I think, therefore I am. Descartes

7. Learning knowledge should be good at thinking, thinking and thinking again. This is how I became a scientist. -Einstein

8. A person who can think is really a person with infinite strength. -Balzac

I also said two famous words of my own:

1, knowing oneself is a person's second life.

If people don't reflect, they will never innovate and never make progress.