Further, seeing it is not enough to the sustentation of a commonwealth, that every man have a propriety in a portion of land, or in some few commodities, or a natural property in some useful art, and there is no art in the world, but is necessary either for the being or well-being almost of every particular man; it is necessary that men distribute that which they can spare, and transfer their propriety therein, mutually one to another by exchange and mutual contract. And therefore it belongeth to the commonwealth, that is to say, to the sovereign, to appoint in what manner all kinds of contract between subjects, as buying, selling, exchanging, borrowing, lending, letting and taking to hire, are to be made; and by what words and signs they shall be understood for valid. And for the matter and distribution of the nourishment, to the several members of the commonwealth, thus much, considering the model of the whole work, is sufficient.