Ludwig von Mises sees this circle, and tries to avoid it. In von Mises there seem to me to be very noteworthy clarity and power. His _Theorie des Geldes und der Umlaufsmittel_ is an exceptionally excellent book. Von Mises has a very wide knowledge of the literature of the theory of money. He has a keen insight into the difficulties involved. He recognizes fully that, so far, the utility school has failed to solve the problem (119-120). His theory is as follows: Individual valuations (93) constitute the basis of the objective exchange value of money. But while for other goods, subjective use-value and subjective exchange-value are different concepts, for money the two coincide, and both rest on the objective value of money (94). This seems to be our old circle in unmistakable form, but Mises thinks he has an escape, as will later appear. No function of money is thinkable which does not rest on its objective exchange value. The subjective value of money rests on the subjective use-values of the goods for which it can be exchanged (95). Money, at the beginning of its money-functioning, must have objective exchange value from other causes than its money-function, but it can remain valuable, even though these causes fall away, exclusively through its function as general instrument of exchange (111). He gives no argument in support of this contention, but refers with approval to Wieser (_loc. cit._), and to Simmel (_Philosophie des Geldes_, 115ff.). Hence, the important consequence that in the value of money of to-day a historical component is contained. Herein is to be found a fundamental contrast between the value of money and the values of other goods (119-120.). The individual valuation of money rests on the objective exchange value of money of _yesterday_. This individual value of money is the explanation, on the money side, of the objective value of money of to-day. Going back, step by step, you come ultimately to the subjective use-value of the money-stuff in its non-monetary employment--a temporal _regressus_. This opens the way to a theory of the value of money based on marginal utility. This avoids the circle of explaining the objective value of money of to-day by the subjective exchange value of money of to-day, which in turn rests on the contemporary objective value of money. I find this particularly interesting, since it employs a device which had once suggested itself to me as a means of escape from the Austrian circle, but which reflection led me to abandon. I have discussed the whole matter in my _Social Value_, and therefore venture a quotation from that book.[95]