Alexander Mahr’s Volkswirtschaftslehre presents economics as a systematic science of scarcity, valuation, price formation, money, capital, crisis, and international exchange. Its starting point is deliberately broad: economic life is not reduced to markets alone, but comprises all purposive arrangements by which available goods are directed toward the satisfaction of human needs.
Unter Wirtschaft ist die Gesamtheit der Dispositionen über die verfügbaren Güter zum Zwecke einer möglichst weitgehenden Befriedigung der Bedürfnisse zu verstehen.
English translation: By economy is to be understood the totality of dispositions over the available goods for the purpose of the most far-reaching possible satisfaction of needs.
From this definition Mahr develops a textbook architecture that moves from elementary concepts—needs, goods, production, value, exchange—to increasingly complex institutional forms. He treats economics as policy-relevant, but not as a substitute for moral philosophy or political choice. Ethical judgment matters, yet it cannot replace explanatory analysis of causes, constraints, and consequences.
Keinesfalls erspart die ethische Bewertung eines wirtschaftlichen Vorganges die Mühe seiner kausalen Erklärung.
English translation: Under no circumstances does the ethical evaluation of an economic process spare us the effort of its causal explanation.
The core of the book is price theory. Mahr explains production broadly, including both material goods and paid personal services, and then links the valuation of productive factors to the valuation of final goods. In this respect his analysis places consumer demand at the logical center of the pricing system: labor, land, and capital receive their economic significance through their contribution to goods that are ultimately desired.
Die Preisbildung der Konsumgüter bildet den logischen Ausgangspunkt für die Ableitung der Preise der Produktivmittel.
English translation: The price formation of consumer goods constitutes the logical starting point for deriving the prices of the means of production.
Yet Mahr’s market theory is not a simple doctrine of automatic harmony. He examines monopoly, bilateral monopoly, bargaining ranges, and the institutional conditions under which prices become determinate or indeterminate. His account treats markets as indispensable mechanisms of coordination, but also as fragile arrangements whose outcomes depend on competitive structure, monetary conditions, and policy frameworks.
The monetary sections extend this causal analysis beyond barter and relative prices. Money is treated functionally as a general means of payment, which allows Mahr to analyze credit, saving, investment, and cyclical movement. He rejects a static view in which investment is merely the mechanical result of prior saving; in a growing economy, monetary expansion may finance additional investment and thereby support development.
Es gehört geradezu zu den Voraussetzungen eines störungsfreien Wachstumsprozesses, daß die Investitionen höher sind als die Ersparungen, wobei das Mehr an Investitionen durch Erweiterung des Zahlungsmittelumlaufs finanziert wird.
English translation: It is indeed among the prerequisites of an undisturbed growth process that investment exceeds saving, with the excess of investment being financed through an expansion of the circulation of means of payment.
This position leads to a moderate but definite policy orientation. Mahr does not defend arbitrary intervention, but he also does not regard monetary and market processes as self-correcting in every relevant sense. The stabilization of purchasing power becomes a practical guideline because it gives currency policy a coherent criterion while acknowledging the disruptive effects of inflation, deflation, and credit instability.
The later parts of the work apply the same framework to crises and foreign trade. Crises reveal failures of coordination among prices, production plans, credit conditions, and demand. Foreign trade is treated with broadly liberal sympathies, but Mahr’s liberalism is strategic rather than doctrinaire: trade policy must attend to reciprocity, productive capacity, and the reactions of other states. The book’s lasting significance lies in this combination of theoretical ordering and policy prudence. Mahr presents Volkswirtschaftslehre as an analytical discipline that explains how goods, prices, money, investment, and trade are causally connected, while insisting that institutional design determines whether those connections yield growth, adjustment, or crisis.
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