It may seem that in setting forth the nature of the sexual impulse in the light of modern biology and psychology, I have said but little of purity and less of morality. Yet that is as it should be. We must first be content to see how the machine works and watch the wheels go round. We must understand before we can pretend to control; in the natural world, as Bacon long ago said, we can only command by obeying. Moreover, in this field Nature’s order is far older and more firmly established than our civilised human morality. In our arrogance we often assume that Morality is the master of Nature. Yet except when it is so elementary or fundamental as to be part of Nature, it is but a guide, and a guide that is only a child, so young, so capricious, that in every age its wayward hand has sought to pull Nature in a different direction. Even only in order to guide we must first see and know.
We realise that never more than when we observe the distinction which conventional sex-morals so often makes between men and women. Failing to find in women exactly the same kind of sexual emotions as they find in themselves, men have concluded that there are none there at all. So man has regarded himself as the sexual animal, and woman as either the passive object of his adoring love or the helpless victim of his degrading lust, in either case as a being who,
