General Theory of Employment Interest and Money

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The General Theory of Employment, Interest, and Money is generally considered to be the masterwork of the English economist John Maynard Keynes. To a great extent it created the terminology of modern macro-economics. It was published in February 1936. The book ushered in a revolution, commonly referred to as the "Keynesian Revolution", in the way economists thought, and especially in terms of the feasibility and wisdom of public sector management of the aggregate level of demand in the economy.

In Keynes' book Essays in Persuasion he looked back on his frustrating attempts to influence public opinion during the Great Depression of the early 1930s. The General Theory represented Keynes's attempt to shift opinion by altering the framework of thought in macro-economics.

Briefly, the General Theory argued that the level of employment in a modern economy was determined by three factors: the marginal propensity to consume (the percentage of any increase in their income that people chose to spend on goods and services), the marginal efficiency of capital (dependent on anticipated rates of return) and the rate of interest. Keynes's key arguments included the idea that in an economy bedeviled by weak demand (e.g. a depression), where in his terminology there was an ignition problem (a difficulty in getting the economy to move forward more vigorously), then the government (more broadly the public sector) could increase aggregate demand by increasing its expenditures, including by deficit spending (borrowing to finance the expenditures), and that the public-sector borrowing would not increase prices or interest rates sufficiently to undermine the effectiveness of such a policy.

Keynes forecast in the General Theory that his book was likely to lead to a revolution in the way men of affairs thought about public policy, and Keynesianism (government attempts to affect demand through fiscal policy (tax, expenditure and borrowing) and monetary policy) was enormously influential in the post-Second World War period. The stagflation of the 1970s made Keynes's interventionist approach less attractive to politicians and economic theorists.

In most nations' economies it became widely accepted that Keynesian demand management was difficult, and that it had subtle damaging effects including undermining the advantages of sound finance (balanced budgets) and encouraging inflation.

To some extent Keynesianism suffered from its own success in that the post-war period largely avoided periods of devastating unemployment and lost production. However, Keynesianism still shows up in the form of new Keynesian economics, which attempts to merge neoclassical economics with some Keynesian policy conclusions.

At his best Keynes was a wonderful craftsman of the English language and his fluency is in evidence in the General Theory, e.g. Chapter 12 dealing with "The State of Long Term Expectation" is considered to be an example of the best writing about the stock market. However, much of the book shows Keynes at his worst, with long complicated sentences uncharacteristic of his style of writing seen in previous books and articles.

Similar research was done earlier by economists such as Michał Kalecki, and Ernst Wigforss, however it was Keynes' work which became the most famous.

The book made the Modern Library List of Best 20th-Century Nonfiction.