Yang Zhu said: "People are like heaven and earth, bearing the nature of the five permanents. One's life is the most spiritual. People and slaves are not enough to guard, skin and flesh are not enough to defend themselves, and they are not enough to escape interests. Without hairiness, it will be considered nourishing. Benevolence does not depend on strength, so wisdom is precious and saving me is precious; Force is cheap, aggression is cheap. However, the body is not mine, but it is born and must be all; I have nothing to do. I have to go. The Lord who has a strong body and the Lord who nurtures all things have a whole body, but they cannot have a body; Although things are not removed, they can't be there. There is a thing, there is a body. Is the body of the world, but also just a saint. A public body, a public thing, is only for people. This is called supreme. "

"People are like heaven and earth, and Xiao Huai is the most spiritual and human. People, their minions are not enough to guard, their skin is not enough to defend themselves, and their benefits are not enough to escape. If they are hairless, they will protect themselves from cold and heat, and of course they will think they are nutritious. " This passage is easy to understand, which means that people are not heartless things, and they are not out of touch. People should eat and drink to keep fit, clothes should keep out the cold, boats should travel far, and people should rely on other substances to keep fit.

How to obtain health needs? Yang Zhu said: "Wisdom is not dependent on strength, so wisdom is expensive, and saving me is expensive; Right, invasion. " Yang Zhu believes that "wisdom without relying on strength" is the best policy, and wisdom is used to obtain health needs; It is the worst policy to invade things by force to get what they need. Yang Zhu, like Wen Zi, praised letting it go.

If this "thing" refers to animals, it is a method of catching birds with nets and also a method of catching animals mechanically. If you take things by strength, fishing is one way and hunting is another. However, it is too hard to get things by force and too little by wisdom. Poor things are poor, and poverty is not what Yang Zhu likes to hear; If you work too hard, you will be tired. Tiredness is not what Yang Zhu likes to hear. It can be seen that this "wisdom without strength" is not used for fishing and hunting; Birds, animals, fish and rabbits are also difficult to do as Yang Zhu hoped.

Therefore, Yang Zhu will provide a basis for his "theory of plucking hair". Yang Zhu said: "However, the body is not mine, it is born and complete;" I have nothing to do. I have to go. The Lord who has a strong body and the Lord who nurtures all things have a whole body, but they cannot have a body; Although you don't remove things, you can't have things. "

Yang Zhu said: I don't own my body, but since I was born, I will save this body; I don't have everything, but now that I have it, I will damage these things. Because the body is the main body of life, everything is the basis of health preservation, although life needs health preservation, the body will still decline; Although we don't destroy other things, they can't last long.

Yang Zhu, a Taoist, thinks that if you don't observe "frugality", there will be no "goodness". It is inevitable that it is expensive and inexhaustible. People can eat. The chaos of the world, the chaos of the warring States period.