Eugen von Böhm-Bawerk
Labor cannot increase its share at the expense of capital.
Eugen von Böhm-Bawerk (1851 – 1914)
Written by Roger W. Garrison
Eugen von Böhm-Bawerk (Born February 12, 1851; Died 1914) was in the right place at the right time to contribute importantly to the development of Austrian economics. Studying at the University of Vienna, he was twenty years old when Carl Menger's Principles of Economics appeared in print in 1871. His formal university training was in law (and thus he was not actually a student of Menger's), but after completing his doctorate in law in 1875, he began preparing himself both at home and abroad to teach economics in his native Austria.
A parallel progression from law to economics characterized the career of his classmate (and, later, brother-in-law) Friedrich von Wieser, best known for his Natural Value published in 1893. The strong influence of Menger's writings on Böhm-Bawerk's thinking, together with a life-time relationship with Wieser, made him a natural for expositing and developing the Austrian theory. In the judgment of Schumpeter (History of Economic Analysis, New York: Oxford University Press, 1954, p. 846), Böhm-Bawerk "was so completely the enthusiastic disciple of Menger that it is hardly necessary to look for other influences."
Böhm-Bawerk's career as a scholar, however, was an intermittent one. The most significant span of scholarly activity was his years at the University of Innsbruck (1881-1889). It was during the 1880s that he first published two of the three volumes of his magnum opus, Capital and Interest. His later years were dominated by his duties as the Austrian Minister of Finance, a position he held, though not continuously, throughout the 1890s and beyond-and for which he is fittingly honored by having his likeness on Austria's one-hundred schilling note. After serving in this capacity and assuming other governmental duties, he returned to teaching in 1904. With a chair at the University of Vienna, he became a colleague of Wieser, successor to the retired Menger. Students who passed through the university during the last decade of Böhm-Bawerk's career (and life: he died in 1914) included Joseph Schumpeter and Ludwig von Mises.
In 1959 the twelve-hundred pages of Capital and Interest were translated into English by Hans Sennholz and George Huncke and published as a single volume. Reviewing this new translation, Mises described this "monumental work" as "the most eminent contribution to modern economic theory." He indicated that no one could claim to be an economist unless he was perfectly familiar with the ideas advanced in this book, and he even went so far as to suggest--as only Mises could--that no citizen who takes his civic duties seriously should exercise his right to vote until he has read Böhm-Bawerk!
The first volume of Capital and Interest, titled History and Critique of Interest Theories (1884), is an exhaustive survey of the alternative treatments of the phenomenon of interest: use theories, productivity theories, abstinence theories, and many more. Most significant in this early work is his devastating critique of the exploitation theory, as embraced by Karl Marx and his forerunners: Capitalists do not exploit workers; they accommodate workers-by providing them with income well in advance of the revenue from the output they helped to produce. More than a decade later, Böhm-Bawerk was to revisit the issues raised by the socialists. Karl Marx and the Close of His System established that the question of how income is distributed among the factors of production is fundamentally an economic-rather than a political-question. And the Austrian answer effectively rebutted the labor theory of value as well as the so-called "iron law of wages."
Böhm-Bawerk's Positive Theory of Capital (1889), offered as the second volume of Capital and Interest, contains his most substantial and profound contribution to our understanding of the economy's time-consuming production processes and of the interest payments they entail. But this volume offers much more. Its treatment of "Value and Price" (Book III) builds on Menger's Principles to present a distinctly Austrian version of marginalism. It is here that we find Böhm-Bawerk's celebrated discussion (p. 143) of the pioneer farmer faced with decisions about the allocation of his sacks of grain among the various uses-as basic feed for himself, his chickens and his parrots, and as an ingredient for making brandy. The essence of Austrian marginalism is conveyed with his telling the story of what would happen (Parrots beware) if the farmer were to suffer the loss of one sack of grain. This story and many variations on it, told countless times by textbook writers over the decades since, stand in contrast to the twice-differentiable total-utility functions that evolved from William Stanley Jevons' marginalism and the general-equilibrium equations that dominate in Leon Walras'.
Appendicies to the third edition of the second volume (1909-1912) appeared as a separate third volume in 1921 with the title Further Essays on Capital and Interest. Here, Böhm-Bawerk offers clarifications, qualifications, and extensions to his theory and responds to his critics. These essays, which contain much of substance, also reveal much about its author's scholarly and rhetorical methods. Böhm-Bawerk reasons like an economist and argues like a lawyer; his most critical remarks are directed towards those whose theories most closely resemble his own. For instance, Gustav Cassel's theory, in which the interest rate brings the supply and demand for "waiting" into balance, is flatly rejected. And despite the fact that the Austrian school is noted for its attention to methodological matters, Böhm-Bawerk took a no-holds-barred approach. Schumpeter articulates the implicit maxim: "Write little or nothing on method, and instead work the more energetically with all available methods."
Modern economics is notorious for its inattention to capital in the sense of an intertemporal structure of intermediate goods. Production takes time, and the time that separates the formulation of multiperiod production plans and the satisfaction of consumer demands is bridged by capital. If mentioned at all in modern textbooks, these aspects of economic reality are introduced as "the thorny issues of capital," a tell-tale phrase that portends a dismissive treatment of this critical subject area. Though a lacuna in mainstream economics, Austrian economics has almost from its beginnings given a special prominence to capital theory. With a full awareness of all the thorns, Böhm-Bawerk built his academic career around the goals of understanding the relationship between capital and interest and extending value theory to the context of intertemporal allocation.
Early in his career, Böhm-Bawerk took up a central question that was much discussed by his contemporaries and predecessors. "Is there any justification for the payment of interest to the owners of capital?" The justification, in his view, rests on a simple fact of reality: people value present goods more highly than future goods of the same quantity and quality. Future goods trade at a discount, or alternatively, present goods trade at a premium. The payment of interest is a direct reflection of this intertemporal value differential. This interest, or agio, paid to capitalists allows workers to receive income on a more timely basis than would otherwise be possible. Böhm-Bawerk's "agio theory" and its implications for the alternative "exploitation theory" were undoubtedly enough to win him recognition by historians of economic thought. But with it he broke new ground and was able to parlay his refutation of socialist doctrine into a new understanding of the capitalist system.
His Positive Theory culminates in a macroeconomic model of general equilibrium that serves to illuminate the classical issues of capital accumulation and technical progress, to resolve the neoclassical problem of the existence and the determination of the rate of interest, and to do still more. He combined his agio theory of interest with Menger's theory of marginal value to show that given the wage rate that the market establishes, profit-maximizing capitalist-entrepreneurs will engage in production activities that not only employ the labor force to the fullest but also fully absorb the economy's subsistence fund. Making use of the earliest and most foundational Austrian insights and taking an economywide perspective, Böhm-Bawerk linked the intertemporal structure of production to the intertemporal preferences of workers and other income earners. Nearly a half-century before John Maynard Keynes made assertions to the contrary and offered them up as a General Theory, the Positive Theory showed that the market for labor and the market for loanable funds-or, more broadly, the market for subsistence-could simultaneously find their respective equilibria.
We have it, then, that Böhm-Bawerk was a macroeconomist--and a self-reflective one at that. The classical economists, especially Ricardo, could in retrospect be considered macroeconomists in an era that predates any hint of the modern distinction. The actual word "macroeconomics," of course, is a relatively modern one. Paul Samuelson, who reorganized the subject matter of economics on the basis of a first-order distinction between microeconomics and macroeconomics, traces the distinction itself to Ragnar Frisch and Jan Tinbergen and dates the word's debut in print to Erik Lindahl in 1939. But in his 1891 essay on "The Austrian Economists" cited earlier, Böhm-Bawerk wrote that "One cannot eschew studying the microcosm if one wants to understand properly the macrocosm of a developed economy." Packed into this understated methodological maxim is both his desire to understand the macroeconomy and his recognition that microeconomic foundations are essential for a viable macroeconomics--a view that, in the mainstream, dates only to the mid 1960s.
To aid in his exposition of the macroeconomics of capital and interest, Böhm-Bawerk introduced his bull's-eye figure-a pattern of concentric rings intended to depict the time-structure of production. Production begins in the center with the use of the original means (land and labor); the process emanates outward over time; and the final product emerges at the outermost ring to satisfy the consumers' ultimate ends. Two bull's eye figures appearing on consecutive pages are used to contrast a well-developed economy with a less-well-developed one. This idiosyncratic depiction can be seen as a forerunner of the more straightforward representation of the means-ends framework introduced by F. A. Hayek during the interwar period. The Hayekian triangle captures the essential linearity-not to deny that there are significant non-linearities-in the structure of production. The triangle, which is divided along the time axis into "stages of production," corresponds closely with the bull's eye figure, which is divided along the radius into "maturity classes."
Though static by its very construction, the bull's-eye figure, as well as the better known Hayekian triangle, is intended to facilitate the analysis of change. What is the nature of the market forces that govern the allocation of resources among the various rings? Böhm-Bawerk's formal analysis-and the simple graphics plus some arithmetic illustrations is the extent of the formalities-helps the reader in "getting the picture." For Böhm-Bawerk, however, "getting the picture" is but a prelude to "telling the story."
His story telling, his informal analysis of the nature of the process of change, breaks free of the static representation. In the case of the stationary state, the concentric rings have two interpretations: (1) the production process can be seen as proceeding over time from earliest input to final output and (2) the areas of the rings can represent the amounts of the different kinds of capital (goods in process) that exist at a given point in time. But to depict the stationary state is only to establish a starting point for a discussion of change.
Böhm-Bawerk briefly considered the question: "What is the procedure if we wish just to preserve the amount of capital in its previous magnitude?" His answer, given in short order, is followed by the more important question: "What must be done if there is to be an increase in capital?" The answer to this key question, which distinguishes Austrian macroeconomics from what would later become mainstream macroeconomics, involves a change in the configuration of the concentric rings. Several types of changes are suggested, each entailing the idea that real saving is achieved at the expense of consumption and of capital in the outer rings and that the saving makes possible the expansion of capital in the inner rings. Böhm-Bawerk indicates that in a market economy it is the entrepreneurs who bring such structural changes about and that their efforts are guided by changes in the relative prices of capital goods in the various rings.
Formal or informal, the message is clear: An expansion of the capital structure is not to be viewed as a simultaneous and equiproportional increase in capital in each of the maturity classes; it is to be viewed as a reallocation of capital among the maturity classes. Overlooked by his predecessors and largely ignored by the modern mainstream, this is the market mechanism that keeps the economy's intertemporal production plans in line with the intertemporal preferences of consumers. The significance of this market mechanism was at issue in his debate with John B. Clark, who held that once capital is in place, the maintenance of capital is automatic and that production and consumption are, in effect, simultaneous. Although a modern reader may conclude that Böhm-Bawerk won the debate and that in later years Hayek was similarly victorious in his debate with Frank Knight, the development of mainstream macroeconomics reflects the implicit belief that it was Clark and Knight who won.
It is easy for modern Austrian economists to see that Böhm-Bawerk was just a step away from articulating the Austrian theory of the business cycle. This step, which was actually taken by Mises and Hayek, would have involved a comparison of changes in the configuration of the rings on the basis of whether those changes were preference-induced or policy-induced. A change in intertemporal preferences in the direction of increased saving reallocates capital among the rings such that the economy experiences capital accumulation and sustainable growth; a policy-induced change in credit conditions, that is, a lowering of the interest rate achieved by the lending of newly created money, misallocates capital among the rings such that the economy experiences unsustainable growth and economic crisis.
Development of the theory in this direction was beyond Böhm-Bawerk for the simple reason that he would not allow himself to venture into monetary theory. His attitude toward this subject matter is revealed in the letters to Swedish economist, Knut Wicksell, whose ideas about the divergence of the market rate of interest and the natural rate would become an important part of the Austrian theory. In 1907, he wrote: "I have not myself given thought to or worked on the problem of money as a scholar, and therefore I am insecure vis-à-vis this subject." In 1912: "You know that I do not really feel competent as regards the extremely difficult theory of money."
Also in 1912, referring to The Theory of Money and Credit, in which Mises first articulates the Austrian theory of the business cycle, Böhm-Bawerk mentions to Wicksell "a book on the theory of money by a young Viennese scholar, Dr von Mises. Mises is a student of myself and Prof. Wieser, which, however, does not mean that I would want to take responsibility for all his views. I have just begun to read his book myself, and am not yet familiar with its content." And finally in 1913, a year before his death, "I have not yet included the theory of money in the subject-matter of my thinking, and I therefore hesitate to pass a judgement on the difficult questions it raises."
Schumpeter lists five general subject areas that Böhm-Bawerk excluded from his research agenda, one of which was money: Böhm-Bawerk endorsed the "indestructible core of truth" in the quantity theory, but accepted the idea that money is a veil. A second excluded area-in retrospect a clear corollary to the first-was business cycle theory: Böhm-Bawerk took economic crises to be "neither an endogenous nor a uniform economic phenomenon but rather the consequences of what are in principle accidental disturbances of the economic process." (The other three excluded subject areas are population, international trade, and applied price and distribution theory.)
We can easily forgive Böhm-Bawerk for these sins of omission. When a profound thinker makes a great leap forward, we are not entitled to complain that the leap was not greater still. We should recognize instead that the successive leaps by Mises, Hayek and others have made Böhm-Bawerk's look all the greater.
Early and modern literature on Böhm-Bawerk's economics has identified many supposed sins of commission as well. Much of the criticism comes from with the Austrian school: His theory was insufficiently subjectivist. His defense of the agio theory of interest relied needlessly on psychological considerations. His reckoning of production time was backward-looking rather than forward-looking. Criticism from outside the Austrian school stem largely from undue attention to Böhm-Bawerk's arithmetic illustrations and from attempts to restate his theory in the language of formal neoclassical theory. His conclusions about the relationship between the interest rate and the degree of roundaboutness in the production process apply less generally that he would have us believe. The economy's intertemporal structure of capital cannot be reduced to a single number. The definitional dependence of the average period of production on the rate of interest invalidates much of his theory. Fortunately, these and many other criticisms leave intact the essential ideas that were important to Böhm-Bawerk and to the future development of Austrian theory.
As substantial an economist as Schumpeter could claim that interest is a disequilibrium phenomenon and fantasize about a long-run equilibrium where market forces have pushed the interest rate to zero. John Maynard Keynes imagined interest to be a purely monetary phenomenon. Creating what Hayek called a "mythology of capital," Frank Knight, following Clark, held that production and consumption occur simultaneously, that the period of production is irrelevant, and that the interest rate is wholly determined by technological considerations. These and other twists and turns in twentieth century views of capital and interest give increased significance to the enduring wisdom of Eugen von Böhm-Bawerk.