Don't hesitate to mend your ways. Shangshu; "zhong Qiu's patent"

if you don't ask for preparation, you can't check your body. Shangshu; Yi Xun

Who makes mistakes? It's not good to change after passing. Zuo zhuan;

Two years of Xuangong, if you don't change it, it's too much. The Analects of Confucius; Wei Linggong: If you make a mistake and don't correct it, it's really a mistake.

With copper as a mirror, you can straighten 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; Biographies of Wei Zhi

The speaker is not guilty, and the listener is warned. Bai Juyi's Nine Books with Yuan Dynasty

is unwise to pass without knowing it. It is not brave to know and not change. Li Gou's The Ninth Book of Changes

makes you happy when you hear it, but you know it without fear. Lu Jiuyuan's "With Fu Quanmei"

If there is something, it will be corrected, and if there is nothing, it will be encouraged. Zhu Xi's Notes on Four Books and Chapters; ; Notes on Analects of Confucius; Volume I

is not more expensive than mistakes, but more expensive than being able to correct them. Wang Shouren's "Gaibian"

Qin hated it and died, and Han was eager to listen. Xue Xuan's Book of Reading (Volume 1

) has changed his body too much and moved (developed) the goodness of his body, which is called self-cultivation. Yan Yuan's Record of Mr. Yan Xizhai's Words and Actions

Good advice is hard to listen to, and good medicine is bitter to taste, which is good for illness.

To Fuller: Honest people never regret their honesty.

Labruyere: When we sigh for the youth that is gone forever, we should consider the future aging, and don't regret not cherishing the prime of life then.

French proverb: Don't wait until the days have passed to find out their loveliness.

Beethoven: There is nothing more valuable than time, so never put off what you do today until tomorrow.