The Theory of Money and Credit - Ludwig von Mises [59]
The revolution in economics since 1870 has not yet been any more successful in leading to an entirely satisfactory solution of this problem. Of course, this does not mean that the progress of the science has left no trace on monetary theory in general and on the theory of the value of money in particular. It is one of the many services of the subjective theory of value to have prepared the way for a deeper understanding of the nature and value of money. The investigations of Menger have placed the theory on a new basis. But till now one thing has been neglected. Neither Menger nor any of the many investigators who have tried to follow him have even so much as attempted to solve the fundamental problem of the value of money. Broadly speaking, they have occupied themselves with checking and developing the traditional views and here and there expounding them more correctly and precisely, but they have not provided an answer to the question: What are the determinants of the objective exchange value of money? Menger and Jevons have not touched upon the problem at all. Carver[14] and Kinley[15] have contributed nothing of real importance to its solution. Walras[16] and Kemmerer[17] assume a given value of money and develop what is merely a theory of variations in the value of money. Kemmerer, it is true, approaches very close to a solution of the problem but passes it by.
Wieser expressly refers to the incomplete nature of the previous treatment. In his criticism of the quantity theory he argues that the law of supply and demand in its older form, the application of which to the problem of money constitutes the quantity theory, has a very inadequate content, since it gives no explanation at all of the way in which value is really determined or of its level at any given time, but confines itself without any further explanation merely to stating the direction in which value will move in consequence of variations in supply or demand; that is, in an opposite direction to changes in the former and in the same direction as changes in the latter. He further argues that it is no longer possible to rest content with a theory of the economic value of money which deals so inadequately with the problem; that since the supersession of the old law of supply and demand as applied to commodities, the case for which it was originally constructed, a more searching law must also be sought to apply to the case of money. [18] But Wieser does not deal with the problem whose solution he himself states to be the object of his investigation, for in the further course of his argument he declares that the concepts of supply of money and demand for money as a medium of exchange are useless for his purpose and puts forward a theory which attempts to explain variations in the objective exchange value of money (objektive innere Tauschwert des Geldes)[19] by reference to the relationship that exists in an economic community between money income and real income. For while it is true that reference to the ratio between money income and real income may well serve to explain variations in the objective exchange value of money, Wieser nowhere makes the attempt to evolve a complete theory of money—an attempt which, admittedly, the factors of supply and demand being excluded from consideration, would be certain to fail. The very objection that he raises against the old quantity