The reason why economics has given such a poor account of the origins of the crisis is that there is something essentially incompatible between the e… - Robert Skidelsky

It was his sense of the precariousness of capitalist civilisation which drew Keynes to monetary policy. Instability in the value of money was undermining the social contract on which capitalism was based.

The General Theory of Employment, Interest and Money is a work of enduring fascination. It is simple and subtle, obscure and profound. It offered a systematic way of thinking not just about the behaviour of contemporary economies, but about the pitfalls in the quest for greater wealth at all times. It combined a vision of the future with a rigorous demonstration of the possibility of underemployment equilibrium. Although young economists of speculative bent were drawn to it as a storehouse of suggestive ideas, it was its practical usefulness which chiefly attracted them in a world poised between decaying democracy and rampaging dictatorship.
At its core is a 'theory of output and employment as a whole', to distinguish it from the orthodox theory of what causes 'the rewards and distribution between different uses of a given quantity of resources' to be what they are. Keynes was the first economist to visualise the economy as an aggregate quantity of output resulting from an aggregate stream of expenditure. This new way of seeing the architecture of an economy is the General Theory's most enduring legacy.

Keynes's politics of the Middle Way in the 1920s can be interpreted in two senses. It can be seen as an expression of an Aristotelian sense of balance, with both nineteenth-century individualism and twentieth-century communism being viewed as excesses of their virtues. Or Keynes can be seen as a prophet of individualism on the defensive. The institutions of society had become like rocks which required the most skillful circumnavigation if the ship of state were not to be smashed up. There was no margin left for stupidity, silliness or obsolete ideas in government. Only the most generous and disinterested spirit, equipped with high intelligence and scientific policies, could save the social order from shipwreck.