s. This doctrine is completely correct, the decline of love is a kind of instinct of animal and human. The gregarious animals will help each other. The motivation for this kind of help is to spread their genes, so the closer to one's own genes, the more likely to be helped.

The most sincere love of mankind is maternal love, but it is also selfish, this love is for one's own children instead of others. It is sincere because it is selfish. At the same time it is the dedication to children, not to mother herself, so it is very noble.

It seems to profane maternal love to say so, in fact, everyone can understand. Both Liu Huifang and Wang Yaru love their children very much in the drama Expectation, but we all think that Liu Huifang is very noble, no one have the same view to Wang Yaru. Because Liu Huifang brought up a child who was picked up from childhood without complaints. Although Wang Yaru loves his own children, she is sarcastic to others. It is more precious than maternal love to love other one's children as well as one's own. Maternal love also belongs to individualism, baby is mother's inter- nalization, a part of mother's body.

Confucius regarded benevolence as the highest principle of behavior. These people are evaluated as too naive. So how can we not be naive? We should regard our own interests as the highest principle and regard our benevolence as a means, especially in international relations. There are no eternal enemies in the world, no eternal friends too, only eternal interests.

We should promote dedication and praise love, but we must understand that the dedication is often driven by profit. Absolute selfless dedication is indeed exist, but not so much. Selfless dedication is precious because of lack, at the same time it is unreliable because of lack. Social development cannot rely solely on selfless dedication.

Eight Levels of Understanding of Self-interest

Thinkers at all times and in all lands have discussed personal interests, but the difference at depth of the discussion is huge. The depth of understanding of self-interest can be divided into eight levels.

First, to recognize everyone have self-interest.

Second, to see self-interest from the nature of animals. So it's a scientific fact that people is inherently evil in the beginning. The beginning of man is the animal stage, isn't it?

Third, to see the contradiction between the benefits and righteousness. Thomas Hobbes said that human beings are like wolves, social life is the war against all human beings. The Chinese ancient philosopher Xunzi said, “Human nature is evil, those kind acts are acquired behavior.”

Fourth, to see people need restraint. Mencius was right when he advocated that one should lay down one's life for justice, but it was getting reactionary when Zhu Xi put forward the idea of “Knowing the truth, exterminating the desires.