Confucius said, "If you don't do it, you will be introspective." ("Li Ren")
-Ten Analects of Confucius-Ten Analects of Confucius
2. Chen Shengshen: From "I have three provinces a day".
Ceng Zi said: "I save three times a day: are you unfaithful to others?" Don't believe in making friends? Can't you learn? "