This is a quote from the book "The Virtue Of Selfishness" by Ayn Rand
...n’s self-interest can be served only by a non-sacrificial relationship with others has never occurred to those humanitarian apostles of unselfishness, who proclaim their desire to achieve the
brotherhood of men. And it will not occur to them, or to anyone, so long as the concept “rational” is omitted from the context of “values,” “desires,” “self-interest” and ethics.
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The Objectivist ethics proudly advocates and upholds rational selfishness — which means: the values required for man’s survival qua man — which means: the values required fo...