This is a quote from the book "The Virtue Of Selfishness" by Ayn Rand
...ve it — what values and goals to pursue, what principles and policies to adopt. If a man were not concerned with this question, he could not be said objectively to be concerned with or to desi
re his self-interest; one cannot be concerned with or desire that of which one has no knowledge.
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Selfishness entails: (a) a hierarchy of values set by the standard of one’s self-
interest, and (b) the refusal to sacrifice a higher value to a lower one or to a nonvalue.
A genuinely selfish man knows that only reason can determine what is, in fact, to his sel...