This is a quote from the book "The Virtue Of Selfishness" by Ayn Rand
...s he does. Emotions and desires are not causeless, irreducible primaries: they are the product of the premises one has accepted. The boy “wants” to renounce his career only because he has ac
cepted the ethics of altruism; he believes that it is immoral to act for his self-interest. That is the principle directing his actions.
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Advocates of the “everyone is selfish”
doctrine do not deny that, under the pressure of the altruist ethics, men can knowingly act against their own long-range happiness. They merely assert that in some higher, undefmable sense such ...