Rational egoism
（重定向自Rational egoist）
Rational egoism (also called rational selfishness) is the principle that an action is rational if and only if it maximizes one's self-interest. The view is a normative form of egoism. It is distinct from psychological egoism (according to which people are motivated only to act in their own self-interest) and ethical egoism (that moral agents ought only to do what is in their own self-interest).