The point in Rousseau’s theory of Sovereignty that offers most difficulty is his view (Book II , chap. VII ) that, for every State, a Legislator is necessary. We shall understand the section only by realising that the legislator is, in fact, in Rousseau’s system, the spirit of institutions personified; his place, in a developed society, is taken by the whole complex of social custom, organisation and tradition that has grown up with the State. This is made clearer by the fact that the legislator is not to exercise legislative power; he is merely to submit his suggestions for popular approval. Thus Rousseau recognises that, in the case of institutions and traditions as elsewhere, will, and not force, is the basis of the State.