Saving Capitalism
From Itself —
John Maynard Keynes

John Maynard Keynes was born in 1883 in Cambridge, England, the son of John Neville Keynes — a logician and economist at Cambridge — and Florence Ada Brown, who would eventually become the first female mayor of Cambridge. The intellectual environment of his childhood was exceptional in ways that only become visible in retrospect: he grew up in a house where ideas were taken seriously, where the life of the mind was assumed to be a legitimate way to spend a life, and where the difference between a rigorous argument and an unrigorous one was treated as a matter of some moral importance. He absorbed all of this and then proceeded to demolish most of what Victorian economics thought it knew.

At Eton he was the best student of his generation. At King's College, Cambridge, he read mathematics and then economics under Alfred Marshall, the dominant figure in British economic thought. He was also a member of the Cambridge Apostles, the secret intellectual society whose other members at various times included Bertrand Russell, G.E. Moore, and Leonard Woolf, and whose influence on Keynes's formation as a thinker — skeptical, empirical, committed to argument rather than authority — was as significant as any formal education he received.

The First Act: Versailles and Its Consequences

Keynes's public career began not with economics but with moral outrage. In 1919 he was a member of the British Treasury delegation at the Paris Peace Conference — the negotiations that produced the Treaty of Versailles — and what he saw there appalled him. The treaty imposed reparations on Germany so punishing, and so impossible to pay without destroying the German economy, that any serious economist could see they would produce not stability but chaos. Keynes saw it, argued against it within the delegation, failed to change the outcome, and resigned.

He then did something almost without precedent for a civil servant: he wrote a book. The Economic Consequences of the Peace, published in December 1919, was a forensic demolition of the Versailles settlement and the men who had made it. It was also, unexpectedly, a gripping read — Keynes wrote prose with a clarity and wit that economists are not generally expected to command, and the book reached an audience far beyond the academy. It made him famous, controversial, and permanently unemployable by any British government that contained people he had insulted. He did not seem to mind.

The Heresy Takes Shape

Through the 1920s Keynes wrote, speculated on the currency markets (successfully enough to make himself and King's College rich), managed his own investment portfolio, edited The Economic Journal, helped run a publishing house, married a Russian ballerina named Lydia Lopokova, collected paintings by Cézanne and Picasso, and slowly assembled the theoretical framework that would become The General Theory of Employment, Interest and Money.

The framework began from a simple observation that orthodox economics could not adequately explain: the economy had been producing unemployment for years, and it was not going away. Classical theory — the theory taught in every university, assumed in every policy discussion, treated as economic common sense — held that unemployment was self-correcting. If wages fell far enough, employers would hire again; equilibrium would be restored. The Depression had now run for years without this happening. The machine, evidently, did not self-correct.

Keynes's answer centered on what he called aggregate demand — the total spending in an economy. In a severe downturn, both consumers and businesses withdraw simultaneously: consumers cut spending out of fear; businesses cut investment because there are no customers. The result is a self-reinforcing spiral that the market, left alone, cannot escape. Prices and wages might eventually fall far enough to restore equilibrium — but the fall required would be so severe, and the suffering involved so catastrophic, that waiting for it to happen was not a policy. It was a decision to let people starve.

The solution was government expenditure. Not permanent deficit spending as a matter of ideology, but deliberate, targeted intervention — the government acting as the spender of last resort when private investment had collapsed. Build roads. Build schools. Employ the unemployed. The money spent would circulate through the economy, generating further spending and further employment, until private investment recovered sufficiently to sustain the expansion without government support. Then — and only then — the government should withdraw and balance its books.

The General Theory and Its Impact

The General Theory of Employment, Interest and Money, published in February 1936, is one of the most consequential books of the twentieth century. It is also, by common consent of everyone who has read it, a difficult one — not because the ideas are inherently complex, but because Keynes was in the process of working them out as he wrote, and the book has the quality of a mind arguing with itself in public. The chapters do not always march in step. The theoretical apparatus is at times inconsistent. Professional economists spent years arguing about what, exactly, Keynes had meant.

But the broad thrust was clear, and it was devastating to the classical consensus. Markets did not automatically clear. Unemployment was not self-correcting. The interest rate alone could not guarantee full employment. Governments had not merely the right but the obligation to manage aggregate demand — to step in when the private sector failed, to sustain spending when private spending collapsed, and to accept that the deficit this required was not a moral failing but a technical instrument of economic management.

Bretton Woods and the Postwar World

By the early 1940s, Keynes's ideas had achieved something extraordinary: they had become, if not the official policy of governments, the intellectual framework within which policy was debated. The New Deal had been Keynesian before Keynes published his theory — Marriner Eccles and the New Deal planners had arrived independently at similar conclusions — and after 1936 the theoretical apparatus was available to make explicit what had previously been intuitive.

In 1944, despite his deteriorating health — he had suffered a serious heart attack in 1937 and never fully recovered — Keynes led the British delegation to the Bretton Woods Conference in New Hampshire, where the postwar international monetary order was designed. He arrived with a comprehensive plan for an International Clearing Union that would have created a new global currency and imposed obligations on both debtor and creditor nations. The Americans, who held most of the world's gold and were in no mood to have obligations imposed on them, rejected the plan. What emerged instead was a modified version that created the International Monetary Fund and the World Bank — institutions that bore Keynes's fingerprints throughout, even where his specific proposals had been overridden.

He returned to England exhausted and ill. He died on April 21, 1946, at Tilton, his farmhouse in Sussex, two weeks after returning from a series of negotiations in Washington over postwar financial arrangements. He was sixty-two years old. His wife Lydia found him dead of a heart attack on Easter Sunday morning.

The Argument That Never Ends

Keynesianism became the dominant framework for Western economic policy for roughly three decades after the Second World War — the "postwar consensus" in which governments across the developed world assumed responsibility for maintaining full employment and managing aggregate demand. The consensus broke down in the stagflation of the 1970s, when Keynes's framework appeared unable to explain or address the combination of high inflation and high unemployment that characterized the decade. The intellectual counterrevolution associated with Milton Friedman and the Chicago School reclaimed ground that had seemed permanently lost.

But Keynes has a habit of returning. In 2008, when the global financial system collapsed and governments across the world reached for a policy response, the response they reached for was Keynesian: fiscal stimulus, deficit spending, government intervention to replace collapsed private demand. The argument about whether this was right, whether it worked, and whether the debts it created were manageable is still ongoing. So is the argument about what Keynes actually meant. So, probably, is the argument about whether government can effectively manage aggregate demand at all. Keynes himself would have been delighted. He believed that economics was a discipline in which the questions were always more interesting than the answers, and that anyone who claimed to have settled them was probably selling something.

Keynes in the Film

In The Great Depression, Keynes is the most physically distant of the six central figures — he appears in two scenes set in London and one scene of correspondence being read aloud in Washington — and arguably the most structurally central. The film's architecture is built around the gap between what he understood and what the people in power were willing to do with that understanding. His ideas travel through Marriner Eccles, through the New Deal planners, through the grudging consent of a Congress that would never have voted for "Keynesianism" had it been called that.

The director has described Keynes's role as "the intelligence the film is trying to dramatize — not a person, exactly, but a way of thinking about the economy that was slowly, fitfully, sometimes accidentally being adopted by people who didn't have the vocabulary to name what they were doing." The performance is deliberately underplayed: a man at a desk, thinking carefully, aware that the ideas he is working out have consequences he will not live to see completed.