Contrary to the general opinion, there is no difference in the total sexual impulses of the sexes. However, if we examine the matter in respect to the two component forces into which Albert Moll analysed the impulse, we shall find that a difference does exist. These forces may be termed the “liberating” and the “uniting” impulses. The first appears in the form of the discomfort caused by the accumulation of ripe sexual cells; the second is the desire of the ripe individual for sexual completion. Both impulses are possessed by the male; in the female only the latter is present. The anatomy and the physiological processes of the sexes bear out the distinction. In this connection it may be noted that only the most male youths are addicted to masturbation, and although it is often disputed, I believe that similar vices occur only among the maler of women, and are absent from the female nature. I must now discuss the “uniting” impulse of woman, for that plays the chief, if not the sole part in her sexuality. But it must not be supposed that this is greater in one sex than the other. Any such idea comes from a confusion between the desire for a thing and the stimulus towards the active part in securing what is desired. Throughout the animal and plant kingdoms, the male reproductive cells are the motile, active agents, which move through space to seek out the passive female cells, and this physiological difference is sometimes confused with the actual wish for, or stimulus to, sexual union. And to add to the confusion, it happens, in the animal kingdom particularly, that the male, in addition to the directly sexual stimulus, has the instinct to pursue and bodily capture the female, whilst the latter has only the passive part to be taken possession of. These differences of habit must not be mistaken for real differences of desire. It can be shown, moreover, that woman is sexually much more excitable (not more sensitive) physiologically than man. The condition of sexual excitement is the supreme moment of a woman’s life. The woman is devoted wholly to sexual matters, that is to say, to the spheres of begetting and of reproduction. Her relations to her husband and children complete her life, whereas the male is something more than sexual. In this respect, rather than in the relative strength of the sexual impulses, there is a real difference between the sexes. It is important to distinguish between the intensity with which sexual matters are pursued and the proportion of the total activities of life that are devoted to them and to their accessory cares. The greater absorption of the human female by the sphere of sexual activities is the most significant difference between the sexes.