The provocative title of Ayn Rand's The Virtue of Selfishness matches an equally provocative thesis about ethics. Traditional ethics has always been suspicious of self interest, praising acts that are selfless in intent and calling amoral or immoral acts that are motivated by self interest. A self-interested person, on the traditional view, will not consider the interests of others and so will slight or harm those interests in the pursuit of his own.
Rand's view is that the exact opposite is true: self-interest, properly understood, is the standard of morality and selflessness is the deepest immorality.
Self interest rightly understood, according to Rand, is to see oneself as an end in oneself. That is to say that one's own life and happiness are one's highest values, and that one does not exist as a servant or slave to the interests of others. Nor do others exist as servants or slaves to one's own interests. Each person's own life and happiness is his ultimate end. Self interest rightly understood also entails self-responsibility: one's life is one's own, and so is the responsibility for sustaining and enhancing it. It is up to each of us to determine what values our lives require, how best to achieve those values, and to act to achieve those values.
Rand's ethic of self interest is integral to her advocacy of classical liberalism. Classical liberalism, more often called "libertarianism" in the 20th century, is the view that individuals should be free to pursue their own interests. This implies, politically, that governments should be limited to protecting each individual's freedom to do so. In other words, the moral legitimacy of self interest implies that individuals have rights to their lives, their liberties, their property, and the pursuit of their own happiness, and that the purpose of government is to protect those rights. Economically, leaving individuals free to pursue their own interests implies in turn that only a capitalist or free market economic system is moral: free individuals will use their time, money, and other property as they see fit, and will interact and trade voluntarily with others to mutual advantage.
