Edward Skidelsky

The sociologist Georg Simmel and the philosopher Ernst Cassirer developed strikingly similar theories of modernity. Both viewed the transition from a substantialist to a functionalist view of the world as the modern age's distinguishing characteristic. But they interpreted this transition from very different philosophical perspectives. Simmel subscribed to a phenomenalism derived from Mach, whereas Cassirer advocated an objectivism inspired by a particular interpretation of Kant. This epistemological disagreement helps account for the two thinkers’ divergent cultural attitudes. Whereas Simmel viewed the complex structures of modernity as an alienation from the flow of subjective life, Cassirer viewed them as a proper expression of humanity's symbolising capacity. Simmel's cultural pessimism developed into an enthusiasm for radical collective action, especially during the First World War. Cassirer's optimism, conversely, guarded him against this temptation

The Invention of Market Freedom, Eric MacGilvray , 216 pp., $94 cloth, $26.99 paper.What Money Can't Buy: The Moral Limits of Markets, Michael Sandel , 256 pp., $27 cloth, $15 paper.Money: The Unauthorised Biography, Felix Martin , 336 pp., £20 cloth, £9.99 paper.Money has always inspired obsession, both in those who amass it and in those who think about it. “Man will never be able to know what money is any more than he will be able to know what God is,” wrote the French financier Marcel Labordère to his friend John Maynard Keynes. The analogy is apt. Money, like God, injects infinity into human desires. To love it is to embark on a journey without end