This is a quote from the book "The Virtue Of Selfishness" by Ayn Rand
... his values — and, for a rational man, his values depend on the judgment of his mind.
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Desires (or feelings or emotions or wishes or whims) are not tools of cognition; they are no
t a valid standard of value, nor a valid criterion of man’s interests. The mere fact that a man desires something does not constitute a proof that the object of his desire is good , nor that i
ts achievement is actually to his interest.
To claim that a man’s interests are sacrificed whenever a desire of his is frustrated — is to hold a subjectivist view of man’s va...