The wise do not argue, the benevolent do not blame, and the good do not judge.

It means that smart people don't argue, good people don't blame, and good people don't comment.

The wise do not argue, the benevolent do not blame, and the good do not judge. It means that a true wise man will not argue with others in words for his own interests or purposes, because obviously it is of little significance to argue. True benevolent people will not blame others, because they understand that blame will not change others, but will only hurt others. A really good man will not judge others, because he knows that a person's strengths and weaknesses are not judged by others, but recognized by himself.

This sentence is extended from Laozi's Tao Te Ching: the knower does not speak, but the speaker does not know. Good words are not beautiful, good words are not beautiful. Good people don't argue, and debaters are not good. Those who know don't know, those who know don't know.