This is a quote from the book "The Virtue Of Selfishness" by Ayn Rand
... them by default, by subconscious associations, on faith, on someone’s authority, by some form of social osmosis or blind imitation. Emotions are produced by man’s premises, held consciously
or subconsciously, explicitly or implicitly.
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Man has no choice about his capacity to feel that something is good for him or evil, but what he will consider good or evil, what will
give him joy or pain, what he will love or hate, desire or fear, depends on his standard of value. If he chooses irrational values, he switches his emotional mechanism from the role of his guar...