In etymology, even the smartest person is stupid, and the explanation is this: he is too smart to show his sharpness and looks stupid on the surface. From Song Sushi's Collected Works of Jin Jing Dongpo, congratulations to Ouyang Shaoshuai and Shi Qi: "Courage is foolishness." The same meaning is clever. Lao Tzu said: Elephants are invisible, which means almost the same thing, but they can better show the great and controllable side of the described person.

Even the cleverest man is stupid. If he is stupid, he has been enlightened. But we must realize that when it is necessary to' raise a fool', the person who raises a fool is practicing, that is, kung fu. Rational enlightenment is a kind of enlightenment, close to the realm of' stupidity'; He is a wise man. He is aware of everything and always wakes up and sticks to it. A wise man is the stupidest. Fools are the opposite of wisdom. It is foolish to be smart on the outside and stupid on the inside; Foolish outside and wise inside, great wisdom also. Smart people are capable outside, used to putting on airs, always boasting, smart and capable, and never lose anything. Confused inside and confused outside, good at haggling over every ounce. Everything is right and wrong, generous and informal. The difference between wisdom and stupidity, the difference between internal and external forces, and the difference between reality and reality.