Joseph A. Schumpeter: Review of J. W. Schiele’s Über den natürlichen Ursprung der Kategorien Rente, Zins und Arbeitslohn (1907)

Schumpeter’s review examines Schiele’s explanation of rent, interest, and wages as necessary economic categories, independent of particular legal institutions or relations of social power. Praising the book’s lively exposition and its unified treatment of income through marginal productivity, he nevertheless challenges its foundations and political conclusions. The review proceeds from economic method through theories of distribution to social justification and agricultural labor policy. Its governing distinction is between explaining an economic phenomenon and justifying the institutions that determine who receives its proceeds.

Schumpeter welcomes exact economic theory but rejects Schiele’s claim that its truths require no historical or statistical confirmation. Deduction depends on assumptions whose applicability cannot itself be established deductively:

Überall, wo man daher materielle Wahrheiten mittelst apriorischer Methoden gewinnen will — d. h. überall außerhalb des Gebietes der Logik und Mathematik — bedürfen die Resultate der Verifikation an den Tatsachen.

English translation: Everywhere, therefore, where one wishes to obtain material truths by means of a priori methods — that is, everywhere outside the domain of logic and mathematics — the results require verification against the facts.

Empirical failure may invalidate a deduction’s premises without invalidating its logic. This insistence on verification accompanies a defense of abstraction: against Schiele’s dismissal of “Robinsonades,” Schumpeter argues that the fictitious economy of an isolated individual can illuminate elementary economic relationships. Simplification is legitimate; treating substantive assumptions as articles of faith is not.

The principal instance is Schiele’s axiom that labor creates all value. Schumpeter reconstructs the resulting argument carefully: labor produces more than its subsistence, but its yield varies with circumstances. Schiele’s surplus therefore differs from Marx’s, since surplus labor is not its defining condition; his recognition of heterogeneous labor yields and independently determined prices also moves him away from socially necessary labor as the determinant of value. Where higher yields attach persistently to a location, the surplus becomes ground rent. Schumpeter identifies this as Ricardo’s explanation, recast in the less defensible language of rent-creating labor.

He accepts that rent is not simply manufactured by private property or speculation, but denies that this establishes the legitimacy of payments to landowners:

Und durch die theoretische Begründung der Rentenercheinung wird gerade noch hervorgehoben, daß sie auch andern Leuten als den Grundherren zufallen könnte, sodaß die von Schiele angegriffenen Bodenreformer einfach darauf hinweisen können, daß für ihre Zwecke eben das letztere Moment entscheidend, und die Zahlung der Rente an die Grundherren wirklich nur eine Folge des Grundeigentumes sei — das allein ist es auch, was die Klassiker meinten.

English translation: And through the theoretical explanation of the phenomenon of rent it is precisely all the more brought out that it could also fall to persons other than the landlords, so that the land reformers attacked by Schiele can simply point out that for their purposes it is just this latter circumstance that is decisive, and that the payment of rent to the landlords is really only a consequence of landed property — and that alone is also what the classical economists meant.

The economic necessity of rent leaves its institutional allocation open. Schumpeter thus turns Schiele’s theoretical demonstration against its attempted social vindication: land reformers can accept the existence of rent while disputing its appropriation by landowners.

Schiele’s treatment of interest introduces a distinction between complete labor, encompassing entrepreneurial activity and risk-bearing, and wage labor. Interest becomes the return to entrepreneurial work, while wages reward manual work; capital itself is treated as previously performed labor. Schiele invokes Thünen’s formula to divide the product between capitalist and worker. Schumpeter objects that the formula can be refuted both empirically and deductively. Once it falls, the proposed theory lacks a means of distinguishing the two incomes:

Dann aber haben wir kein Mittel, Zins und Lohn zu trennen.

English translation: But then we have no means of separating interest and wages.

Together with the unsupported labor-value axiom, this failure is Schumpeter’s central theoretical objection. He also reiterates that the persistence of economic categories—even under socialism—does not establish that interest, wages, and rent must accrue respectively to capitalists, workers, and landowners. Nor does Schiele’s reasoning demonstrate that a general strike could not raise wages.

The closing discussion briefly records Schiele’s attempted reconciliation of marginal utility and labor-value theory, then tests his proposal to exclude Polish agricultural workers because their lower subsistence requirements allow them to undercut German labor. Schumpeter raises a conditional counterargument: if only the lower wage makes cultivation viable, exclusion might contract agriculture instead of increasing German employment. His qualified respect for the seriousness of this discussion matches the review’s broader stance. Economic theory deserves rigorous development, but neither unverified premises nor the existence of distributive categories can settle questions of ownership, justice, or policy.