And in course of evolutionary progress, the emotion of Love has been all the while more and more so leavening and inspiring sex-attraction with its purer and more tender attributes, that human passion has come to combine--in those of higher nature--the flame and energy of physical attraction with the tenderness and devotion of altruistic affection. With the result that human parenthood, thus quickened and spiritualised, has become ever further empowered to evolve more highly intelligised, more beautiful and more efficient types of offspring. That Passion, pure and simple, has evolved out of the Male sex-instinct is certain. Even in its chivalrous development of romantic passion, are found, in transfigured form, that flame and urgence for possession which manifest crudely and cruelly in the primal male-instinct. Without this virile ardour, indeed, the sex-relation is but a poor and tepid, or a cold and sensual thing. Yet Passion is not Love. That meekness and forbearance, humility and self-surrender have been reared in the Female sex-instinct of submission to passion (primarily in aversion and fear more often than in acquiescence) is equally certain. And without these chastening factors to temper, soften and anneal, the sex-relation is a fierce and tyrannous concern. But no more than passion, is submission Love. Neither in passion nor in submission, pure and simple, is there joy of surrender or welding communion. Nevertheless, since every human faculty must have its roots in living function, and every living function must possess some physical organ in which its processes occur, from what human function sprang the Love that is selfless, altruistic and pitiful; soul and inspiration of the most sacred emotions--self-sacrifice, charity, mercy, devotion, tenderness? In what nursery of Human Consciousness was this fair and gentle blossom sown; to spring, to develop, and to make for gracious growth? Since, although it has come to lend its purity and sweetness to the Sex-passion, it neither sprang from nor has been reared in sex-instinct, is it a product of Parental Affection? Is it an evolution of the self-negation and the tenderness of parents for their children? VI