Keynes was an applied economist who turned to inventing theory because the theory he had inherited could not properly explain what was happening. - Robert Skidelsky

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.

Keynes had a political objective. Unless governments took steps to stabilize market economies at full employment, much of the undoubted benefit of markets would be lost and political space would be opened up for extremists who would offer to solve the economic problem by abolishing markets, peace and liberty. This in a nutshell was the Keynesian 'political economy'. Keynes offers an immensely fruitful way of making sense of the slump now in progress, for suggesting policies to get us out of the slump, for ensuring, as far as is humanly possible, that we don't continue to fall into pits like the present one, and for understanding the human condition. These are the things which make Keynes fresh today.

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.