Absorption in self is not, as some have supposed, the natural condition of unregenerate man. It is a disease brought on, almost always, by some thwarting of natural impulses. The voluptuary who gloats over thoughts of sexual gratification is in general the result of some kind of deprivation, just as the man who hoards food is usually a man who has lived through a famine or a period of destitution. Healthy, outward-looking men and women are not to be produced by the thwarting of natural impulse, but by the equal and balanced development of all the impulses essential to a happy life.
Source: Bertrand Russell :Marriage and Morals, 1929
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