phases of human society. But this is simply the doctrine of the unity of personality and the interdependence of all phases of the social life, and it is very different from Marx's theory that the economic determines all the other phases; for under the doctrine of social interdependence we can see it is quite as reasonable to state that the religious and political phases of the social life determine the economic as it is to state that the economic determines the political and religious. Let us bring the discussion down to more concrete terms. The student has seen that in every social problem there are a multitude of factors or stimuli (causes) at work, and that in no problem is the economic factor so all important that it may be said that the other factors are simply subsidiary. On the contrary, in such a problem as crime the methods of production and distribution of material goods, while important factors in the problem of crime, in no way determine that problem; and ideal conditions of the production and distribution of wealth would in no way solve the problem of crime. So, too, the negro problem is hardly touched by the question of the forms of industry or the economic organization of society. We might go on with a whole list of social problems and show that in every case the economic factor is no more important than many other factors, and that the economic reorganization of society would in some cases scarcely affect these problems at all. _The social problem, therefore,--the problem of the relations of men to one another,--is not simply nor fundamentally an economic problem; rather it is fundamentally a biological and psychological problem,_--if you please, a moral problem. This brings us to a second criticism of socialism, namely, that it proposes to reorganize human society upon an economic basis, not upon a biological basis. The program of the socialist looks forward to the satisfaction of economic needs, but it has failed to take into account the biological requirements for existence. It would be far more scientific to reorganize society upon the basis of the needs of the family than to reorganize it simply upon the basis of industry. The reproductive process which the economic socialists ignore, or leave unregulated almost entirely, is far more important for the continued existence of human society than all its economic processes,--if by the reproductive process we mean the rearing as well as the birth of offspring; and if by the economic process we mean merely the forms and methods of the production and distribution of material goods.