Civilized communities divide broadly into two parts—productive units whose labour supplies what is needful for existence, and unproductive units whose existence depends on the labour of others. The latter have been correctly termed “parasites.” M. Jean Massart explains in his scientific scrutiny of social phenomena,[11] that during the period of our industrial development a force of integration has gradually strengthened the main body of the social organism, giving it power to resist in some degree the burden of parasitism. Consequently arbitrary authority and slavish subserviency have abated, and two movements affecting family life in the middle class are discernible—first, there is an increasing revolt from domestic service as a form of labour directly opposed to the spirit of independence that is growing in workers and to the force of integration which by ranging them shoulder to shoulder is preparing them for a new form of industrial life; second, sons of the aristocracy and daughters of the middle class are joining the ranks of producers with some sense of the dignity of labour and the degradation of a purely parasitic existence. Social parasitism is not organic. It is an extraneous condition induced in a society developing its civilization. No man is necessarily a parasite; he acquires the character in the course of his life history, and happily the young are refusing to acquire it. Footnote 11: _Parasitism, Organic and Social_, p. 121. Observe, then, it is not in one or two sections of our community life, but in all sections that diverse causes are producing one uniform result—the break-up of the family home; and behind all the more superficial causes there is working a profound factor of change in the centripetal or constructive and the centrifugal or destructive forces of nature. Whilst the latter destroys old forms, the former prepares for the new form—prepares, not only by an integration of workers, but by a fresh inspiration of love and desire for work. Hence women and men endowed with reason, knowledge and practical skill may bring the life of their own immediate circle into express and positive line with this constructive, profoundly evolutional, movement.