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

Maynard Keynes was born into a certain civilisation at a particular moment of history, and was one of its foremost products. He inherited both its aspirations and its tensions. He grew up in the shadow of its great figures, notably Henry Sidgwick and Alfred Marshall, the teachers and colleagues of his father. His style of thought and way of life both bear Cambridge's unmistakable imprint.

Having said this, it is easy to see that he might have been deluding himself. He envisaged a modern capitalist economy governed by a Platonic ideal, and gentlemanly codes of behaviour. But once the capitalist genie is let out of the bottle it cannot be pressed into the service of a pre-modern ethics of the good life and pre-modern codes of behaviour. The good life in the classical sense presupposes that human desire has some ultimate end, or telos, whereas modern economic theory and life presuppose that it is insatiable. As regards behaviour, he took for granted a class-based system of values which economic progress was undermining. These were contradictions which Keynes never fully faced.

History, politics, sociology, psychology and anthropology are suggestive, not conclusive, disciplines: they cannot prove (or more importantly disprove) any hypothesis. Economics should aim to be more like them and less like physics and maths. That is why I was drawn to Keynes: he was a man of many parts. I have heard economists say he was a brilliant thinker, but a bad theorist. They objected to his 'ad hoc' theorizing - inventing bits of theory to explain unusual events, rather than building up his theory from secure micro-foundations. His wife called him 'more than an economist'. I am less than an economist, but perhaps this makes me better able to appreciate his greatness.