“Love,” says Charles Albert, “is the result of all the forward steps of human activity in all departments, and in every direction, as manifested in their effects upon the sexual life. It is an advance which goes hand in hand with all other advances. Man is an inseparable whole, and in theory only can he be subdivided into separate faculties. In reality, indeed, all departments of human development are so intimately associated that progress in any one of them must place something to the credit of all.” Increasing psychical refinement and differentiation of the human type, domination of the intelligence and of emotion over brute force, transformation of the social relations between man and woman in consequence of economic conditions or of religious and moral ideas, respect for personality, a secured provision for the most pressing vital needs, and a consequent elevation and complication of the sexual life, the influence of a longing for ideal beauty in a psychical and moral sense--all these and much more have contributed to constitute sexual love in the sense in which we understand and experience it at the present day. The speech of the lover of our own time is the comprehensive expression of all human progress. The difference between animal rutting and the lofty sensation of love corresponds exactly to the gulf which separates primitive man, capable only of chipping for himself a few almost useless flint tools, from civilized man who, with the aid of innumerable machines, has tamed to his service the elementary forces of Nature. We must recur to the earliest beginnings of the evolution of the human psyche in its association with sexuality, in order to understand the =profound= and =primitive= connexion between the bodily and the spiritual formative impulse; this connexion has been expressed by the saying that the sexual impulse is the father of all those intellectual impulses peculiar to man which have made him a thinker and a discoverer. In the time of Schelling’s natural philosophy, they went so far as to speak of the “testicular hemispheres” as analogous to the hemispheres of the brain. And is not this connexion also expressed etymologically (in German) in the verbal association of _Zeugung_ (procreation) and _Ueberzeugung_ (certainty, _i.e._, higher, or intellectual, procreation), and, further, by the fact that in the Hebrew tongue the ideas of “procreation” and “cognition” are jointly represented by a =single= term? And, returning to the physical sphere, it may be mentioned that, according to Moebius (“Ueber die Wirkungen der Kastration”--“Concerning the Effects of Castration,” Halle, 1906), sexuality is the common product of testicular and cerebral activity.