.though what an ideal life is and how it can be achieved is subject of controversy. All this related to the study of the State as it ought to be. Here Political of mankind in order to establish the principles of collective morality We consider and evaluate the purpose and end of the State and the fundamental topics involved in such a study are the ethical foundation of authority the nature and limit of political obligation the right and freedom of the individual group and nation and an examination of the entire body politic from the point of view of the ultimate end of human life.The approach may be speculative or analytical,or in the case of Plato a combination of both.