understand a man by his faults
The Chinese idiom, Pinyin is Gu ā NGU ò zh ī R é n, which means to observe the nature of a person's fault, you can understand him. From the Analects of Confucius · Liren.
The origin of Idioms
Chapter 7 of the Analects of Confucius: the faults of human beings are different from each other's party. If we observe the faults, we know the benevolence In the Analects of Confucius, Li Ren said, "people's mistakes are always of the same nature as those of his group. Therefore, by examining a person's mistakes, we can know whether he is benevolent or not. "
Idiom usage
It refers to a person's fault. Examples, this is OK. (Chu Tan Ji Jun Chen Qi by Li Zhi of Ming Dynasty)
understand a man by his faults
Fire and water are incompatible - shuǐ huǒ bù xiāng róng