First of all, I will teach you to understand "man" from a philosophical point of view. From the perspective of survival, man is an animal that pursues primitive nature. Different from other animals, the survival of other animals is the continuation of life and will not pursue their own nature. People should not only pursue survival, but also the meaning of "life". Finding the meaning of life is the essence of human life. Philosophical inquiry is embodied in the image of the novel and is the pursuit of human nature. From the perspective of existence, man's natural existence and social existence are always contradictory, and man and history are inseparable. Man is not only the creator of history, but also the carrier of history. People who exist in society and those recorded in history are somewhat deceptive. In essence, people who exist in society live in the shackles of various rational orders and have sharp contradictions with the existence of natural persons. Man is not an animal, so he cannot be selfish.