It means that students will not enlighten them if they want to say but can't say it without thinking and understanding. If you don't think hard and can't figure it out, don't inspire him.

The Analects of Confucius states: "Don't be angry, don't start, don't worry, don't give a corner, don't take a corner, and you will never be there again." This is an important famous saying of Confucius on heuristic teaching, which has a far-reaching influence on later generations.

Extended information:

"Anger" is the contradictory psychological state when students are actively thinking about a certain problem and are eager to solve it but have not yet figured it out. At this time, teachers should give timely guidance to students' thinking methods to help students open their minds. This is "enlightenment".

"worry" is another ambivalent psychological state in which students have been thinking about a certain problem for some time, but they have not yet considered it mature, and they want to say it but are difficult to express it.

At this time, teachers should help students to clear their minds, understand the essential attributes of things, and then express them in more accurate language, which is "hair".

Reference: No anger, no anger, no resentment-Baidu Encyclopedia