Thus the practical movement for the limitation of the powers of government became associated, as in the influential philosophy of John Locke, with the doctrine that the ground and justification of the restriction was prior non-political rights inherent in the very structure of the individual. From these tenets, it was a short step to the conclusion that the sole end of government was the protection of individuals in the rights which were theirs by nature. The American revolution was a rebellion against an established government, and it naturally borrowed and expanded these ideas as the ideological interpretation of the effort to obtain independence of the colonies. It is now easy for the imagination to conceive circumstances under which revolts against prior governmental forms would have found its theoretical formulation in an assertion of the rights of groups, of other associations than those of a political nature. There was no logic which rendered necessary the appeal to the individual as an independent and isolated being. In abstract logic, it would have sufficed to assert that some primary groupings had claims which the state could not legitimately encroach upon. In that case, the celebrated modern antithesis of the Individual and Social, and the problem of their reconciliation, would not have arisen. The problem would have taken the form of defining the relationship which non-political groups bear to political union. But, as we have already remarked, the obnoxious state was closely bound up in fact and in tradition with other associations, ecclesiastic (and through its influence with the family), and economic, such as gilds and corporations, and, by means of the church-state, even with unions for scientific inquiry and with educational institutions. The easiest way out was to go back to the naked individual, to sweep away all associations as foreign to his nature and rights save as they proceeded from his own voluntary choice, and guaranteed his own private ends. Nothing better exhibits the scope of the movement than the fact that philosophic theories of knowledge made the same appeal to the self, or ego, in the form of personal consciousness identified with mind itself, that political theory made to the natural individual, as the court of ultimate resort. The schools of Locke and Descartes, however much they were opposed in other respects, agreed in this, differing only as to whether the sentient or rational nature of the individual was the fundamental thing. From philosophy the idea crept into psychology, which became an introspective and introverted account of isolated and ultimate private consciousness. Henceforth moral and political individualism could appeal to “scientific” warrant for its tenets and employ a vocabulary made current by psychology:--although in fact the psychology appealed to as its scientific foundation was its own offspring.