We may now generalize and clearly state: That is masculine which belongs
to the male--to any or all males, irrespective of species. That is
feminine which belongs to the female, to any or all females,
irrespective of species. That is ovine, bovine, feline, canine, equine
or asinine which belongs to that species, irrespective of sex.

In our own species all this is changed. We have been so taken up with
the phenomena of masculinity and femininity, that our common humanity
has largely escaped notice. We know we are human, naturally, and are
very proud of it; but we do not consider in what our humanness consists;
nor how men and women may fall short of it, or overstep its bounds, in
continual insistence upon their special differences. It is "manly" to
do this; it is "womanly" to do that; but what a human being should do
under the circumstances is not thought of.

The only time when we do recognize what we call "common humanity" is in
extreme cases, matters of life and death; when either man or woman is
expected to behave as if they were also human creatures. Since the
range of feeling and action proper to humanity, as such, is far wider
than that proper to either sex, it seems at first somewhat remarkable
that we have given it so little recognition.

A little classification will help us here. We have certain qualities in
common with inanimate matter, such as weight, opacity, resilience. It
is clear that these are not human. We have other qualities in common
with all forms of life; cellular construction, for instance, the
reproduction of cells and the need of nutrition. These again are not
human. We have others, many others, common to the higher mammals; which
are not exclusively ours--are not distinctively "human." What then are
true human characteristics? In what way is the human species