3) it's never too late to correct your mistakes. -Shakespeare

4) In the revolutionary cause, realizing your own shortcomings is equivalent to correcting more than half. -Lenin

5) If you are not prepared with others, you will be ill-prepared. -"Shangshu? Yi Xun

6) If you have it, change it, and if you don't, encourage it. -Zhu Xi

7) With copper as a mirror, you can dress your clothes; Taking the past as a mirror, we can know the rise and fall; Take people as a mirror, you can know the gains and losses. -"Old Tang Book? Biography of Wei Zhi

8) One cannot trip over the same stone twice.

9) It's never too late to mend.

1) No one is perfect. Everyone makes mistakes. As long as they are corrected, everything will be fine.

11) who makes mistakes? It's not good to change after passing. -"Zuo zhuan? Two years of Xuangong

12) The greatest wisdom in the world lies in understanding one's own weaknesses. -France

13) People are not afraid to make mistakes. What is terrible is to make mistakes all their lives.

14) One can't make progress without criticism and self-criticism.

15) The prodigal son never changes his gold.

16) there is no end to the sea of misery, and turning back is the shore.

17) If you see good, move (learn), and if you have, change. -"Zhouyi? Yi & ? Like

18) it is unwise to go too far and not know; It is not brave to know and not change. -Li Gou's The Ninth Book of Changes