To argue that hypothesis of “economic man” emphasizes the human nature of “self-interest” at the risk of suspending the human characteristic of ethics and morality, which determines that such hypothesis is inappropriate to be the dominant value to cope with the doctor-patient relationship demanding altruism.

The oversimplification and radicalization of the binary opposition between self-interest and selflessness must lead to mutual exclusion between business principles and moral sentiments.

The demand of individual survival and development,the characteristic of exchange and competition in market economy have made egoism the inner motive force of market economy.

On Egoism and Altruism of Mahayana;

This paper mainly analyzes the personality of Charles who is selfish, self-centered and wants to control others and that of Amy who is optimistic, strong, self-confident and cherishes freedom.

Old Man Sun is no selfish man;this is due to the social environment and his own experiences.