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.

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 ...
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