A study of Evolution shows the differentiation and intensification of Sex-characteristics to have been the main feature in Human advance, and to have been progressively achieved by incalculable centuries of increasing differentiation and intensification of two opposite orders of impulse and faculty.
In savages and in all the less civilised races, the personal and temperamental differences between the sexes are but slight, and last for no longer than a few years of life. As with other faculties, Sex-differentiations become ever further intensified and more complexly defined as development rises in the scale. Man becomes more man. Woman, more woman. Most notable during the period over which the human organisation sustains its maximum of condition, these Sex-characteristics take longer to arrive at their perfection, and are longer and more fully sustained in the higher races and organisms than is the case with the lower. Then, with that degeneration of tissue which sets in with on-coming age, the old man becomes womanish, the old woman mannish.
It cannot be doubted that human perfection reaches its climax in the accentuation of the differences between the Sex-characteristics, physical and mental, of the one sex from those of the other. The best types of men differ far more from the best types of women than inferior men and women differ from one another. In body and in attribute, the sexes are complementary and supplementary. And their dissimilarities are the measure of their complementary and supplementary values.
Their attraction to one another, their interest and happiness in one anothers' company, are proportional to the degree in which members of one sex supply for members of the other, sentiment and qualities lacking in their own. Mannish women and womanish men are alike incapable of experiencing and inspiring the love-passion, which charms and transfigures life for true man and true woman. These unfortunate, imperfect neuter-persons, because of the deficiency in them of normal sex attributes and impulse, are shut out from the richest and sweetest, most sacred emotions of Humanity—precisely as persons of defective brain are debarred from the richer and fuller appreciations and joys of consciousness.
And yet, apart and distinct from, although at the root of this abnormal neuterdom, wherein the traits of one sex are so antagonised by those of the other that the finest powers of both are nullified—normally, all men possess latent in them the qualities of Woman; all women have latent in them the qualities of Man. Otherwise, this third Neuter-gender—mannish women and womanish men—could not have come into being.
In crises of life and under other abnormal conditions, the dormant characteristics of the one sex are seen to emerge in members of the other, and to become dominant. A woman, in the face of danger, develops the strength, the courage and the material resource of a man. A man, when put to it, reveals the gentleness, patience and psychical resource of a woman. And in neither is this substitution of alien traits imitative, merely. That it is vital and intrinsic is shown by the fact that not only mental characteristics, but the body itself becomes transformed. If the circumstances—exposure to danger, to hard and rough physical labours or to mental exactions which are the normal of the male—continue for long, woman's physique, equally with her attributes, becomes increasingly virile of mode.
A kindred metamorphosis occurs in men. When called upon to exercise for any length of time the functions of a woman, beside a sick bed, for example—or, to state it otherwise, when the male in him no longer receives the stimulus of the natural male rôle and activities—man's virile qualities decline. He becomes emasculate.
So too in disease. With the vital powers at low ebb, man's virility ebbs low. He grows soft and sensitive, uncontrolled and emotional, loses energy and initiative; lapses in outlook and temperament from the masculine normal. In abnormal states of physical development, men are puerile or womanish.
Women, as result of like abnormal undevelopment, or after operative removal of reproductive organs (propter quos est mulier) become mannish of type. In extreme cases the figure changes to a strong and sturdy maleness, the voice drops to gruffness; manners and speech become terse and abrupt, the jaw squares; even moustache or beard may develop. Such women lose, perhaps, every womanly characteristic; refinement of form, mental delicacy and sensitiveness, emotion, subtlety. They lapse to the biological grade, not of cultured, but of rough working men. In lesser degrees of sex-extinction, such as are seen in many of our modern girls, de-sexed by masculine training, the subjects are boyish merely; lean, active, restless, hipless, breastless, lacking all those fair, delicate artistries of face and form, as likewise the complex sensibility and emotionalism which are the higher characteristics of their sex.