This is a quote from the book "The Virtue Of Selfishness" by Ayn Rand
...“Ethics is not a mystic fantasy — nor a social convention — nor a dispensable, subjective luxury. ... Ethics is an objective necessity of man’s survival — not by the grace of the super
natural nor of your neighbors nor of your whims, but by the grace of reality and the nature of life.”
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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 for human survival — not the values produced by the desires, the feelings, the whims or ...