It has been argued that a political theory cannot be identified succinctly with the treatment of political problems; it is also a context that determines both what problems are to be gathered together for treatment as political and the relevance of ‘other studies’ to their treatment, as well as the relevance of their previous treatment by other theorists. These questions regarding the location of the political have to reformulated, now that we face the emergence in the eighteenth century of two different kinds of political theory. We cannot continue simply to trace the shifting relations between the individual and the state, and between the moral and the political. We must take into account shifting relations between the moral , the political and the economic. The structures of moral and political theories, and the relations between them are altered by the intrusion.