Free Republic

JOHN MAYNARD KEYNES and Friedrich Hayek. The names conjure opposing poles of thought about making economic policy: Keynes is often held up as the flag bearer of vigorous government intervention in the markets, while Hayek is regarded as the champion of laissez-faire capitalism. What these men actually thought — about the economy and each other — is more complicated, as Nicholas Wapshott demonstrates in “Keynes Hayek: The Clash That Defined Modern Economics” (W. W. Norton, $28.95). This lively book explores one of the most pressing economic questions of our time: To what extent should government intervene in markets? And in...