This is a quote from the book "The Virtue Of Selfishness" by Ayn Rand
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Some variety of this question is often raised as an objection to those who advocate an ethics of rational self-interest. For example, it is sometimes claimed: “Every
one does what he really wants to do — otherwise, he wouldn’t do it.” Or: “No one ever really sacrifices himself. Since every purposeful action is motivated by some value or goal that the
actor desires, one always acts selfishly, whether one knows it or not.”
To untangle the intellectual confusion involved in this viewpoint, let us consider what facts of reality ...