To learn to be human is to develop through the give-and-take of communication an effective sense of being an individually distinctive member of a community; one who understands and appreciates its beliefs, desires and methods, and who contributes to a further conversion of organic powers into human resources and values. But this translation is never finished. The old Adam, the unregenerate element in human nature, persists. It shows itself wherever the method obtains of attaining results by use of force instead of by the method of communication and enlightenment. It manifests itself more subtly, pervasively and effectually when knowledge and the instrumentalities of skill which are the product of communal life are employed in the service of wants and impulses which have not themselves been modified by reference to a shared interest. To the doctrine of “natural” economy which held that commercial exchange would bring about such an interdependence that harmony would automatically result, Rousseau gave an adequate answer in advance. He pointed out that interdependence provides just the situation which makes it possible and worth while for the stronger and abler to exploit others for their own ends, to keep others in a state of subjection where they can be utilized as animated tools. The remedy he suggested, a return to a condition of independence based on isolation, was hardly seriously meant. But its desperateness is evidence of the urgency of the problem. Its negative character was equivalent to surrender of any hope of solution. By contrast it indicates the nature of the only possible solution: the perfecting of the means and ways of communication of meanings so that genuinely shared interest in the consequences of interdependent activities may inform desire and effort and thereby direct action.