It is not more valuable than having no mistakes, but more valuable than being able to correct them. ——Wang Shourenzheng's "Repair"

To make a mistake without correcting it is to make a mistake. ——"The Analects of Confucius"

It is unwise to make mistakes without knowing them; to know but not be able to change them is to be uncourageous——Li Gou's "The Ninth Book of Changes"

Let go as little as possible Making mistakes is a human principle; not making mistakes is an angel's dream. ——Hugo