We are seeing, in this financial crisis, a rebirth of Keynesian economics. We are talking again of his 1936 book The General Theory of Employment, Interest and Money, which was written during the Great Depression. This era, like the present, saw many calls to end capitalism as we know it. The 1930s have been called the heyday of communism in western countries. Keynes's middle way would avoid the unemployment and the panics and manias of capitalism. But it would also avoid the economic and political controls of communism. The General Theory became the most important economics book of the 20th century because of its sensible balanced message.