This file is a single-author journal review: Schumpeter’s 1936 response to Keynes’s General Theory. Its scope is a compact critical appraisal of the book’s claim to be general theory. Schumpeter begins by granting the scale of the event: Keynes has produced a work whose influence is already visible in students, reviewers, and public debate.
A book by Mr. Keynes on fundamental questions which are right at the heart of the practical discussions of the day is no doubt an event.
The review’s thesis is that this event is intellectually brilliant but scientifically compromised. Keynes, Schumpeter argues, offers policy for a specific historical emergency while writing as if he had established general laws. This is why the review repeatedly calls the book “Ricardian”: practical counsel enters theory disguised as universal analysis, and assumptions are shaped by the policy conclusion they are meant to support.
But it is not quite easy to accept that invitation, for everywhere he really pleads for a definite policy, and on every page the ghost of that policy looks over the shoulder of the analyst, frames his assumptions, guides his pen.
Schumpeter’s first conceptual move is to separate usable advice from scientific generality. Keynes’s proposals may suit “the England of today,” but that does not make them a theory of capitalism. Economics, he insists, loses authority when it turns situated programs into allegedly timeless doctrine.
Economics will never have nor merit any authority until that unholy alliance is dissolved.
The central technical critique concerns aggregation. Schumpeter argues that Keynes’s aggregate demand and aggregate supply functions illegitimately extend the Marshallian supply-and-demand cross from individual commodities to society-wide magnitudes. The result is a construction that appears determinate only because the familiar apparatus has been moved into a domain where its meaning changes.
There is as little justification for this extension of the "Marshallian cross" as there is for its application to the case of money, which has remained a besetting sin of the Cambridge group to this day.
He then attacks Keynes’s use of employment as the key index of output. For Schumpeter, this procedure assumes that production functions remain invariant. That assumption is fatal because capitalism is not a static allocation problem but an evolutionary process of altered techniques, products, and industrial forms. Keynes’s model therefore excludes the very movement that produces capitalism’s distinctive disturbances.
The capitalist process is essentially a process of change of the type which is being assumed away in this book, and all its characteristic phenomena and problems arise from the fact that it is such a process.
This is the review’s deepest objection. A static underemployment equilibrium may be coherent within Keynes’s definitions, but it cannot explain depression, abundance, or unemployment in modern industry if innovation and structural change have first been removed.
No interpretation of modern vicissitudes, "poverty in plenty" and the rest, can be derived from it.
Schumpeter reads Keynes’s underemployment thesis as resting on two devices: the propensity to consume and the failing inducement to invest. He rejects the “Psychological Law” of consumption as a deus ex machina unless grounded in the mechanisms by which spending changes. He similarly faults the investment theory for omitting what he sees as investment’s strongest propeller: the financing of changes in production functions. If consumption and investment are independent, Keynes is wrong; if they are linked by equilibrating mechanisms, the general theory shrinks into frictions, rigidity, and “stickiness.”
The monetary theory of interest receives only qualified praise. Schumpeter welcomes a purely monetary theory but treats Keynes’s “liquidity preference” as another surface category, not an explanation rooted in economic process. Restore those underlying processes, he says, and Keynes’s diagnosis changes.
Interest would lose the pivotal position which it holds in Mr. Keynes' analysis by virtue of the same technique which made it possible for Ricardo to hold that profits depend upon the price of wheat.
The closing satire on Keynesian spending—Louis XV, Pompadour, and du Barry as supposed agents of full employment—extends the same methodological warning. The review’s relevance lies in its early statement of the Schumpeterian anti-Keynesian case: demand failure may be real, but a theory organized around aggregate equilibrium, fixed production functions, and policy-shaped assumptions cannot grasp capitalism as incessant transformation.
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