restraint must be used to fill up the abysses of luxury." Some of Hinton's views were set forth by a writer intimately acquainted with him in a pamphlet entitled _The Future of Marriage: An Eirenicon for a Question of To-day_, by a Respectable Woman (1885). "When once the conviction is forced home upon the 'good' women," the writer remarks, "that their place of honor and privilege rests upon the degradation of others as its basis, they will never rest till they have either abandoned it or sought for it some other pedestal. If our inflexible marriage system has for its essential condition the existence side by side with it of prostitution, then one of two things follows: either prostitution must be shown to be compatible with the well-being, moral and physical, of the women who practice it, or our marriage system must be condemned. If it was clearly put before anyone, he could not seriously assert that to be 'virtue' which could only be practiced at the expense of another's vice.... Whilst the laws of physics are becoming so universally recognized that no one dreams of attempting to annihilate a particle of matter, or of force, yet we do not instinctively apply the same conception to moral forces, but think and act as if we could simply do away with an evil, while leaving unchanged that which gives it its strength. This is the only view of the social problem which can give us hope. That prostitution should simply cease, leaving everything else as it is, would be disastrous if it were possible. But it is not possible. The weakness of all existing efforts to put down prostitution is that they are directed against it as an isolated thing, whereas it is only one of the symptoms proceeding from a common disease." Ellen Key, who during recent years has been the chief apostle of a gospel of sexual morality based on the needs of women as the mothers of the race, has, in a somewhat similar spirit, denounced alike prostitution and rigid marriage, declaring (in her _Essays on Love and Marriage_) that "the development of erotic personal consciousness is as much hindered by socially regulated 'morality' as by socially regulated 'immorality,'" and that "the two lowest and socially sanctioned expressions of sexual dualism, rigid marriage and prostitution, will gradually become impossible, because with the conquest of the idea of erotic unity they will no longer correspond to human needs."