This is a quote from the book "The ​Virtue Of Selfishness" by Ayn Rand
...ainst the facts of reality, against his own life. Man’s emotional mechanism is like an electronic computer: man has the power to program it, but no power to change its nature — so that if he sets the wrong programming, he will not be able to escape the fact that the most self-destructive desires will have, for him, the emotional intensity and urgency of lifesaving actions. He has, of course, the power to change the programming — but only by changing his values.

A man’s basic values reflect his conscious or subconscious view of himself and of existence. T...
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