The archive.

Why do ordinary disturbances in a market economy swell into cumulative waves of boom and slump rather than dying away? Commissioned by the League of Nations to survey the whole field, Haberler refuses every single-cause answer — money alone, saving alone, technology alone, psychology alone — and instead tests each theory for logical consistency and mutual compatibility. He weighs Hawtrey's purely monetary account against the over-investment theories of Hayek, Mises and Spiethoff, distinguishes vertical from horizontal maladjustment, and shows that the acceleration principle and over-investment theory are complementary rather than rival explanations. His synthesis treats prosperity and depression as phases of one unstable adjustment mechanism, in which credit, forced saving, inventories and confidence magnify change and then reverse it.

Deflation in the sense of a gradual decrease in the total demand for goods in terms of money plays an essential rôle in the contraction process.

An equation can look like a law of cause and effect while stating only an identity — and that, in this early critique, is the charge laid against Schumpeter's monetary formula E = MU = Σpm. Haberler shows that its right-hand side merely restates money income as the sum of prices times quantities consumed, while its left-hand side reduces velocity to the number of purchases each coin intermediates; the whole is a tautology, not an explanation. From this he presses on to the larger quarry, the "objective exchange value of money," which he dissolves into ordinary price relations and denies any existence as a measurable social magnitude. Against Wieser and Anderson he insists that value theory needs only two concepts, subjective value and price, anticipating what he would later call the microfoundation of macroeconomics.

The problem of the value of money is a sham problem!

An equation can balance without explaining why prices change. In this 1925 article, Gottfried Haberler makes that distinction the basis of a critical engagement with Schumpeter’s monetary theory. Counting only purchases that deliver goods to final consumers gives monetary velocity a special meaning: hoarded money and funds circulating solely in capital markets contribute nothing to the relevant expenditure total. Haberler shows why such definitions preserve an accounting identity without establishing causal dependence. He extends the challenge to money’s “objective” exchange value, arguing that a general price level depends on how and for what purpose prices are combined. The article offers a concrete way to distinguish useful monetary shorthand from an aggregate mistakenly treated as an independent economic force.

Banks can create purchasing power—but can they thereby create the resources needed for investment? In this 1927 review of Albert Hahn’s theory of bank credit, Gottfried Haberler accepts deposit creation while contesting the conclusions Hahn draws from it. His critique turns on two concrete distinctions: an individual bank must reckon with settlement demands from other banks, and money available to entrepreneurs is not the same as resources available to sustain production. Yet Haberler does not reject every productive role for credit expansion; he allows that it may help overcome obstacles to otherwise profitable innovations. The review offers a precise encounter between monetary innovation and economic constraint, showing why recognition of bank-created money need not entail belief that credit can replace saving.

Everyone says prices have risen or money has lost purchasing power, yet no single formula makes such statements exactly measurable — the obstacle, Haberler contends, is not missing data but the vagueness of the concept being measured. Steering between naive faith in index arithmetic and total skepticism, the book first works through the whole apparatus of index theory — arithmetic, harmonic and geometric means, Laspeyres, Paasche, Fisher's "ideal" formula, the circular and reversal tests — to show that formal criteria alone can never fix economic meaning. Only indices traceable to the money cost of one definite bundle of goods are intelligible. Grounding the argument in subjective value and methodological individualism, he concludes that a price level exists only relative to a person or group: there is no objective, supra-personal purchasing power of money to be found.

Das volkswirtschaftliche Preisniveau — ein statistischer Zufall.

English translation: “The economy-wide price level — a statistical accident.”

What can surviving coins tell us about monetary policy when records of laws and governmental motives are almost absent? In this brief review of Arthur R. Burns’s Money and Monetary Policy in Early Times, Gottfried Haberler praises the economic interpretation of numismatic evidence while keeping its limits in view. His distinctive interest is in how familiar monetary problems emerged within ancient institutions: small Greek states faced pressures toward monetary union and constraints on depreciation, while Roman rulers pursued extensive fiscal debasement. The review offers a compact encounter with Haberler’s economic reading of ancient money—and with the difficulty of inferring policy from material remains rather than explicit testimony.

A catalogue of economic disturbances is not yet an explanation of crisis. This distinction drives Gottfried Haberler’s review of Walter Heinrich’s attempt to ground crisis theory in Othmar Spann’s universalism. Haberler grants Heinrich’s diligence but questions what his hierarchy of institutions and disturbances actually explains: listing tariffs, banking errors, war, and changing consumption patterns does not establish how a boom turns into a crisis. His objection is not simply to unfamiliar terminology or broad definitions, but to their failure to yield corresponding analytical gains. Sharply polemical, the review offers a concrete test of theoretical synthesis: does a new framework identify causal relations, or merely rearrange familiar textbook knowledge?

Business-cycle theories may be easier to distinguish than the theorists who hold them. In this brief 1929 review of Alvin Harvey Hansen’s Business-Cycle Theory, Gottfried Haberler endorses Hansen’s refusal to draw a rigid boundary between monetary and non-monetary explanations, yet questions the usefulness of a classification in which the same authors repeatedly reappear. His pointed objection to the placement of harvest theories makes the difficulty concrete: does locating cyclical effects within capitalism adequately distinguish their causes? Haberler’s discriminating appraisal separates orderly presentation from substantive insight, reserving his praise for Hansen’s detailed analysis, especially his criticism of Foster and Catchings. The review offers a compact example of Haberler judging competing explanations without forcing their proponents into exclusive camps.

Can bank credit support increased production without making enterprises dependent on continued expansion? In this 1929 critical essay on D. H. Robertson’s Banking Policy and the Price Level, Gottfried Haberler tests Cambridge monetary theory against the movement of capital and labour between industries. His objection is concrete: keeping wheat prices steady after agricultural productivity improves may hold resources in farming when adjustment requires their transfer elsewhere. Admiring Robertson’s analytical distinctions while challenging his policy conclusions, Haberler asks what simplified barter models leave out when applied to a monetary economy. Saving, production time, and especially interest become tests of whether credit-financed investment can endure. The essay makes visible a tension between stabilizing prices and sustaining a productive structure once credit expansion ends.

When two price indexes diverge, what establishes which one is wrong? In this 1929 review of Warren Milton Persons’s The Construction of Index Numbers, Gottfried Haberler challenges the assumption that mathematical consistency tests can settle questions of economic measurement. He questions why price and quantity indexes must use identical averaging formulas, and rejects Persons’s inference that cumulative divergence from a fixed-base series discredits chain indexes. For Haberler, comparisons between adjacent periods have an advantage: they reduce the heterogeneity of the goods being compared. This compact technical review shows how a dispute over formulas turns on a substantive question—whether the observations remain economically comparable—and distinguishes proof of divergence from proof of error.

If the United States has a comparative advantage in steel, should it abandon wheat production and depend on Luxembourg’s harvest? Haberler uses this deliberately disproportionate pairing to distinguish gains from trade from the demand for complete specialization. In this 1929 article, his defence of comparative cost proceeds by limiting what the principle claims: money prices do not overturn comparative advantage, but production costs alone cannot determine which goods a country exports and imports. Answering James W. Angell and A. F. Burns, Haberler separates genuine qualifications from supposed refutations. Readers can discover how a classical proposition survives these objections through sharper distinctions—while Haberler leaves unresolved the deeper problem of its reliance on a labour theory of value.

Does explaining why firms hold cash make counting how often money changes hands redundant? In this English-language review of M. W. Holtrop’s Dutch monograph, Gottfried Haberler separates the merits of a causal explanation from the rejection of an alternative accounting description. He welcomes Holtrop’s attention to payment schedules, uneven receipts and expenditures, and credit instruments, but disputes his insistence that cash-reserve and movement theories are incompatible. The disagreement becomes concrete when production is divided among several firms: additional transactions can increase the demand for money, with consequences for prices. This brief review offers a precise encounter between monetary theory and business finance, showing why Haberler values an explanation of cash holdings without abandoning velocity as a useful measure of monetary supply.