in
Her Sex and Love Life--Man and Woman Biologically Different.

In reading books or listening to lectures on sex, you will meet with
statements which will seem to you contradictory. One time you will
read or hear that the sex instinct is much more powerfully developed
in man than it is in woman; next time you will come across the
statement that sex plays a much more important role in women than it
does in men. One time you will hear that men are oversexed, that they
are by nature polygamous and promiscuous, while woman is monogamous
and as a rule sexually frigid; the next time you will be assured that
without love a woman's life is nothing, and you will be confronted
with Byron's well-known and oft quoted two lines: Man's love is of
man's life a thing apart, 'Tis woman's whole existence.

These contradictions are only apparent and result from two facts:
first, that the words sex or sexual instinct and love are used
indiscriminately and interchangeably as if they were synonymous terms,
which they are not; second, there is failure to bear in mind the
essential differences in the natures and manifestations of the sexual
instincts in the male and the female. If these differences are made
clear, the apparent contradictions will disappear. The outstanding
fact to bear in mind is that in man the sex instinct bears a more
sensual, a more physical, a coarser and grosser character, if you have
no objection to these adjectives, than it does in woman. In women it
is finer, more spiritual, more platonic, to use this stereotyped and
incorrect term. In men the sex manifestations are more centralized,
more local, more concentrated in the sex organs; in women they are
more diffused throughout the body. In a boy of fifteen the libido
sexualis may be fully developed, he may have powerful erections and a
strong desire for normal sexual relations; in a girl of fifteen there
may not be a trace of any purely sexual desire; and this _lack_ of
desire for _physical_ sex relations may manifest itself in women up to
the age of twenty or twenty-five (something that we never see in
normal men); in fact, women of twenty-five and even older, who have
not been stimulated and whose curiosity has not been aroused by
novels, pictures, and tales of their married companions, may not
experience any sexual desire until several months after marriage. But
while their desire for actual sexual relations awakens much later than
it does in men, their desire