knowledge appeared to be excretions, are of primary reproductive importance, but, as regards the sexual constitution of the individual, they are of far less importance than the internal secretions of these very same glands. It is, however, by no means only the specifically sexual glands which thus exert a sexual influence within the organism. Other glands in the brain, the throat, and the abdomen,—such as the thyroid and the adrenals,—are also elaborating fermentative secretions to throw into the system. Their mutual play is so elaborate that it is only beginning to be understood. Some internal secretions stimulate, others inhibit, and the same secretions may under different conditions do either. This fact is the source of many degrees and varieties of energy and formative power in the organism. Taken altogether, the internal secretions are the forces which build up the man's and woman's distinctively sexual constitution: the special disposition and growth of hair, the relative development of breasts and pelvis, the characteristic differences in motor activity, the varying emotional desires and needs. It is in the complex play of these secretions that we now seek the explanation of all the peculiarities of sexual constitution, imperfect or one-sided physical and psychic development, the various approximations of the male to female bodily and emotional disposition, of the female to the male, all the numerous gradations that occur, naturally as we now see, between the complete man and the complete woman.

When we turn the light of this new conception on to our old ideas of purity,—to the virtue or the vice, accordingly as we may have been pleased to consider it, of sexual abstinence,—we begin to see that those ideas need radical revision. They appear in a new light, their whole meaning is changed. No doubt it may be said they never had the validity they appeared to possess, even when we judge them by the crudest criterion, that of practice. Thus, while it is the rule for physicians to proclaim the advantages of sexual continence, there is no good reason to believe that they have themselves practised it in any eminent degree. A few years ago an inquiry among thirty-five distinguished physicians, chiefly German and Russian, showed that they were nearly all of opinion that continence is harmless, if not beneficial. But Meirowsky found by inquiry of eighty-six physicians, of much the same nationalities, that only one had himself been sexually abstinent before marriage. There seem to be no similar statistics for the English-speaking countries, where there exists a greater modesty—though not perhaps notably less need for it—in the making of such confessions. But if we turn to the allied profession which is strongly on the side of sexual abstinence, we find that among theological students, as has been shown in the United States, while prostitution may be infrequent, no temptation is so frequent or so potent, and in most cases so irresistible, as that to solitary sexual indulgence. Such is the actual attitude towards the two least ideal forms of sexual practice—as distinguished from mere theory—on the part of the two professions which most definitely pronounce in favour of continence.

It is necessary, however, as will now be clearer, to set our net more widely. We must take into consideration every form and degree of sexual manifestation, normal and abnormal, gross and ethereal. When we do this, even cautiously and without going far afield, sexual abstinence is found to be singularly elusive. Rohleder, a careful and conscientious investigator, has asserted that such abstinence, in the true and complete sense, is absolutely non-existent, the genuine cases in which sexual phenomena of some kind or other fail to manifest themselves being simply cases of inborn lack of sexual sensibility. He met, indeed, a few people who seemed exceptions to the general rule, but, on better knowledge, he found that he was mistaken, and that so far from being absent in these people the sexual instinct was present even in its crudest shapes. The activity of sex is an activity that on the physical side is generated by the complex mechanism of the ductless glands and displayed in the whole organism, physical and psychic, of the individual, who cannot abolish that activity, although to some extent able to regulate the forms in which it is manifested, so that purity cannot be the abolition or even the indefinite suspension of sexual manifestations; it must be the wise and beautiful control of them.

It is becoming clear that the old platitudes can no longer be maintained, and that if we wish to improve our morals we must first improve our knowledge.

II

We have seen that various popular beliefs and conventional assumptions concerning the sexual impulse can no longer be maintained. The sexual activities of the organism are not mere responses to stimulation, absent if we choose to apply no stimulus, never troubling us if we run away from them, harmless if we enclose them within a high wall. Nor do they constitute a mere excretion, or a mere appetite, which we can control by a crude system of hygiene and dietetics. We better understand the psycho-sexual constitution if we regard the motive power behind it as a dynamic energy, produced and maintained by a complex mechanism at certain inner foci of the body, and realise that whatever periodic explosive manifestations may take place at the surface, the primary motive source lies in the intimate recesses of the organism, while the outcome is the whole physical and spiritual energy of our being under those aspects which are most forcible and most aspiring and even most ethereal.

This conception, we find, is now receiving an admirable and beautifully adequate physical basis in the researches of distinguished physiologists in various lands concerning the parts played by the ductless glands of the body, in sensitive equilibrium with each other, pouring out into the system stimulating and inhibiting hormones, which not only confer on the man's or woman's body those specific sexual characters which we admire but at the same time impart the special tone and fibre and polarity of masculinity or femininity to the psychic disposition. Yet, even before Brown-Séquard's first epoch-making suggestion had set physiologists to search for internal secretions, the insight of certain physicians on the medico-psychological side was independently leading towards the same dynamic conception. In the middle of the last century Anstie, an acute London physician, more or less vaguely realised the transformations of sexual energy into nervous disease and into artistic energy. James Hinton, whose genius rendered him the precursor of many modern ideas, had definitely grasped the dynamic nature of sexual activity, and daringly proposed to utilise it, not only as a solution of the difficulties of the personal life but for the revolutionary transformation of morality.[5] It was the wish to group together all the far-flung manifestations of the inner irresistible process of sexual activity that underlay my own conception of auto-erotism, or the spontaneous erotic impulse which arises from the organism apart from all definite external stimulation, to be manifested, or it may be transformed, in mere solitary physical sex activity, in dreams of the night, in day-dreams, in shapes of literature and art, in symptoms of nervous disorder such as some forms of hysteria, and even in the most exalted phases of mystical devotion. Since then, a more elaborate attempt to develop a similar dynamic conception of sexual activity has been made by Freud; and the psycho-analysts who have followed him, or sometimes diverged, have with endless subtlety, and courageous thoroughness, traced the long and sinuous paths of