This set of thoughts (sometimes called psychological egoism) is entirely wrong. Suppose you want food. Following the train of thought of the last paragraph, I interpret you as wanting relief from the tension of wanting food. So I punch you in the stomach, making you sick enough to stop wanting food. Did I get you what you wanted? Not at all (even forgetting that the punch may have been painful). You didn’t want any old relief from the tension. You wanted food. Similarly a normal person aroused by sexual passion does not want any old relief from the passion. A bromide might give him that, but
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