This is a quote from the book "The Virtue Of Selfishness" by Ayn Rand
...le the standard of value operating the physical pleasure-pain mechanism of man’s body is automatic and innate, determined by the nature of his body — the standard of value operating his emot
ional mechanism, is not. Since man has no automatic knowledge, he can have no automatic values; since he has no innate ideas, he can have no innate value judgments.
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Man is bom with
an emotional mechanism, just as he is born with a cognitive mechanism; but, at birth, both are “tabula rasa.” It is man’s cognitive faculty, his mind, that determines the content of both....