But since the work which the housebuilder produces is of more value than that of the shoemaker, and the shoemaker had to exchange his work with the housebuilder, but it was not possible to get a house for shoes; under these circumstances they had recourse to using something for which all these things are purchasable, to wit silver, which they called money, and to effecting their mutual exchanges by I each paying the worth of each product, and thereby holding the political communion together.