ow, on the other hand, organisms whose main reproductive
feature is simply the production of spermatozoa would be better fitted
for the work of search and impregnation if unhampered by a cumbersome
female generative system. Hence the advantage of the sexes being
separate."[1129] Here we have the reason why the sexes are independent
and complementary, but why "equality" can never be predicated of them.
Power in the family, in industry, in civil affairs, war, and religion is
not the same thing and cannot be. Each sex has more power for one
domain, and must have less power for another. Equality is an incongruous
predicate. "Under the influence of the law of battle the male has become
more courageous, powerful, and pugnacious than the female.... So, too,
the male has, in the struggle, often acquired great beauty, success on
his part depending largely, in many cases, upon the choice of the
females who are supposed to select the most beautiful mates. This is
thought to be notably the case with birds."[1130] In some few cases the
female seeks the male, as in certain species of birds. Some male fish
look after the eggs, and many cock-birds help to build the nest, hatch
the eggs, and tend the young.[1131] When the females compete for the
males the female is "endowed with all the secondary characters of the
polygamous male; she is the more beautiful, the more courageous, the
more pugnacious." This seems to show that the secondary characters are
due to sex selection.[1132] Men are held to be polygamous by descent and
in their "instincts as at present developed." "The instinct for
promiscuous intercourse is much stronger among men than women, and
unquestionably the husband is much more frequently all in all to the
wife than she to him."[1133]

+359. Sex difference and evolution.+ According to the current
applications of the evolution philosophy it is argued that "inheritable
characters peculiar to one sex show a tendency to be inherited chiefly
or solely by that sex in the offspring."[1134] Women are said to be
mentally more adaptable.[1135] This is shown in their tact, which is
regarded as a product of their desire to adapt themselves to the
stronger sex, with whose muscular strength they cannot cope. If a woman
should resist her husband she would provoke him, and her life would be
endangered. Passive and resigned women would survive. "Here at any rate
we may have _one_ of the reasons why women are more passive and resigned
than m