the race finds good in the present. As the older race-experience is
laid in they body and built into the very fiber of the individual,
inherited as an innate impulse, it has become an integral part of
himself, an individual need rather than a social one. On the other
hand, man has, as another innate part of his being, the desire to go
with the herd, to conform to the standards of his fellows, to be what
he has learned society wants him to be. Hence the struggle, insistent,
ever more pressing, between two sets of desires within the man
himself; the feud between the past and the present, between the
natural and the social, between the selfish and the ideal. On one
side, there is the demand for instinctive satisfaction; on the other,
for moral control; on one side the demand for pleasure; on the other,
the demands of reality.[13]

[Footnote 13: "All the burdens of men or society are caused by the
inadequacies in the association of primal animal emotions with those
mental powers which have been so rapidly developed in
man-kind."--Shaler quoted by Hinkle: Introduction to Jung's
_Psychology of the Unconscious_.]

Two factors intensify the conflict. In the first place, the older
habits have the head start. Compared with the almost limitless extent
of our past history, our desire for the control of the instincts is
very new indeed. It requires the long look and the right perspective
to understand how very lately we have entered into our new conditions
and how old a habit we are trying to break. In the second place, the
larger part of the stimulus comes from within the body itself. When
studying the other instincts, we saw that the best way to control was
to refuse to stimulate when the situation was not suitable for
discharge. But with the organically aroused sex-instinct there is no