No less potent is the action of control in another direction. Physiology of sex and the laws of inheritance are carefully studied by guardians of domestic peace who, rejecting the ordinary and vulgar conception accept the teaching of science, and science points to philoprogenitiveness, or love of offspring, as the proper motor force in reproduction. Were this force the antecedent cause of parentage throughout the nation, disease and premature death would be undermined and gradually subside. “Indiscriminate survival” gives way before that “rational selection and birth of the fit” which is a fundamental condition of social well-being—the master-spring to a rapid evolution of general happiness. The transition, however, from our present state of confused sentiment, illogical thought, and disastrous action in the field of _eugenics_ or stirpiculture, to clearness of purpose and consistency of life, must necessarily be a work of extreme delicacy and patient endeavour. Its achievement requires the nuclei of collectivist homes. Its nurture must take place in the bosom of a superior domestic life. The process, in short, implies an alteration in humanity itself, to be brought about by such preparatory alteration in outward conditions as will set up and bring into play the constant interaction of new social forces. Individualism in domestic life vitiates the movement towards socialism outside domestic life, for it gives us misshapen units unfit for a better social system—a system that seeks to banish tyranny, despotism, pride, self-will and every anti-social emotion in order to establish the perfect justice and equality that are essential to the highest ethical state. It is a necessity of socialism to lay hold of the family and fashion it anew so that it may produce a superior material of human life, i.e. individual men and women whose enjoyments lie chiefly in sympathy and whose spontaneous impulses are towards an essentially social life. And further, not only is our present domestic system wholly incapable of dealing with sex relations so as to adapt them to stirpiculture, not only is it so feeble as to be absolutely impotent in the regulation of the conduct of masculine youth outside its boundaries, but it is destitute also of elements required in the organizing of a progressive educational system.