It's never too late to correct mistakes. -Shakespeare
In the revolutionary cause, realizing one's own shortcomings is equivalent to correcting more than half. -Lenin
4. A wise man will correct his mistakes, but a fool will cover them up.
5. Change if you have it, and encourage if you don't. -Zhu
6. Errors are inevitable, but don't repeat them. Zhou Enlai
7. One cannot live without criticism and self-criticism, so one cannot make progress. Mao Zedong
8, knowing mistakes can be changed, and goodness is great.
9, with copper as a mirror, you can dress; Taking history 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 Wei Zhi Biography"
10, if you don't change it, it will be too much. -The Analects of Confucius