This is a quote from the book "The Virtue Of Selfishness" by Ayn Rand
... the province of reason ? Is ethics a subjective luxury — or an objective necessity?
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In the sorry record of the history of mankind’s ethics — with a few rare, and unsuccessfu
l, exceptions — moralists have regarded ethics as the province of whims, that is: of the irrational. Some of them did so explicitly, by intention — others implicitly, by default. A “whim�
� is a desire experi- enced by a person who does not know and does not care to discover its cause.
No philosopher has given a rational, objectively demonstrable, scientific answer ...