In many ways, Darwin’s view of sexual selection and Acton’s take on female sexuality culminated in Krafft-Ebing’s apocalyptic vision of what would happen if we undid such an order of things, which he offered up in 1886: “If a woman is normally developed mentally, and well-bred, her sexual desire is small. If this were not so, the whole world would become a brothel and marriage and family impossible.” Female passivity and sexlessness is the homeostasis that keeps the world in balance.