The Theory of Money and Credit - Ludwig von Mises [69]
This also is the clue to the meaning of the sentence, "Living is dearer in Austria than in Germany," a sentence which has a certain meaning even though there is no difference between the purchasing power of money in the two countries. The differences in prices in the two areas do not refer to commodities of the same nature; what are supposed to be identical commodities really differ in an essential point; they are available for consumption in different places. Physical causes on the one hand, social causes on the other, give to this distinction a decisive importance in the determination of prices. He who values the opportunity of working in Austria as an Austrian among Austrians, who has been brought up to work and earn money in Austria, and cannot get a living anywhere else on account of language difficulties, national customs, economic conditions, and the like, would nevertheless be wrong in concluding from a comparison of domestic and foreign commodity prices that living was dearer at home. He must not forget that part of every price he pays is for the privilege of being able to satisfy his wants in Austria. An independent rentier with a free choice of domicile is in a position to decide whether he prefers a life of apparently limited satisfactions in his native country among his own kindred to one of apparently more abundant satisfaction among strangers in a foreign land. But most people are spared the trouble of such a choice; for most, staying at home is a matter of necessity, emigration an impossibility.
To recapitulate: the exchange ratio subsisting between commodities and money is everywhere the same. But men and their wants are not everywhere the same, and neither are commodities. Only if these distinctions are ignored is it possible to speak of local differences in the purchasing power of money or to say that living is dearer in one place than in another.
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[1] See p. 81 f. above.
[2] See Senior, Three Lectures on the Cost of Obtaining Money, pp. 1 ff.
[3] See Wieser, "Der Geldwert und seine Veränderungen," Schriften des Vereins für Sozialpolitik 132: 531 f.
Chapter 10. The Exchange-Ratio Between Money of Different Kinds
1. Coexistence of Different Kinds of Money. 2. Static or Natural Exchange-Ratio.
1 The Twofold Possibility of the Coexistence of Different Kinds