The state is for Aristotle prior to the family and the village, although it succeeds them in time, for only when the state with its conscious organisation is reached can man understand the secret of his past struggles after something he knew not what. If primitive society is understood in the light of the state, the state is understood in the light of its most perfect form, when the good after which all societies are seeking is realised in its perfection. Hence for Aristotle as for Plato, the natural state or the state as such is the ideal state, and the ideal state is the starting-point of political inquiry.
In accordance with the same line of thought, imperfect states, although called perversions, are regarded by Aristotle as the result rather of misconception and ignorance than of perverse will.
They all represent, he says, some kind of justice. Oligarchs and democrats go wrong in their conception of the good. They have come short of the perfect state through misunderstanding of the end or through ignorance of the proper means to the end. But if they are states at all, they embody some common conception of the good, some common aspirations of all their members.
The Greek doctrine that the essence of the state consists in community of purpose is the counterpart of the notion often held in modern times that the essence of the state is force. The existence of force is for Plato and Aristotle a sign not of the state but of the state's failure. It comes from the struggle between conflicting misconceptions of the good. In so far as men conceive the good rightly they are united. The state represents their common agreement, force their failure to make that agreement complete.