This is a quote from the book "Bitcoin: A Peer-to-Peer Electronic Cash System" by Satoshi Nakamoto
... “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.”

“The Objectivist ethics proudly advocates and upholds rational selfishness...
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