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Now in what manner does a human being discover the concept of “value”? By what means does he first become aware of the issue of “good or evil” in its simplest form? By means of the physical sensations of pleasure or pain. Just as sensations are the first step of the development of a human consciousness in the realm of cognition, so they are its first step in the realm of evaluation.
The capacity to experience pleasure or pain is innate in a man’s body; it is part of his nature, part of the kind of entity he is. He has no choice about it, and he has no choice about the standard that determines what will make him experience the physical sensation of pleasure or of pain. What is that standard?* His life*.
The pleasure-pain mechanism in the body of man — and in the bodies of all the living organisms that possess the faculty of consciousness — serves as an automatic guardian of the organism’s life. The physical sensation of pleasure is a signal indicating that the organism is pursuing the right course of action. The physical sensation of pain is a warning signal of danger, indicating that the organism is pursuing the wrong course of action, that something is impairing the proper function of its body, which requires action to correct it. The best illustration of this can be seen in the rare, freak cases of children who are born without the capacity to experience physical pain; such children do not survive for long; they have no means of discovering what can injure them, no warning signals, and thus a minor cut can develop into a deadly infection, or a major illness can remain undetected until it is too late to fight it.
The form in which man experiences the reality of his values is pleasure . . . . A chronic lack of pleasure, of any enjoyable, rewarding or stimulating experiences, produces a slow, gradual, day-by-day erosion of man’s emotional vitality, which he may ignore or repress, but which is recorded by the relentless computer of his subconscious mechanism that registers an ebbing flow, then a trickle, then a few last drops of fuel — until the day when his inner motor stops and he wonders desperately why he has no desire to go on, unable to find any definable cause of his hopeless, chronic sense of exhaustion.