Martin Wolf via Paul Krugman:
The third and most important lesson is that one should not treat the economy as a morality tale. In the 1930s, two opposing ideological visions were on offer: the Austrian; and the socialist. The Austrians – Ludwig von Mises and Friedrich von Hayek – argued that a purging of the excesses of the 1920s was required. Socialists argued that socialism needed to replace failed capitalism, outright. These views were grounded in alternative secular religions: the former in the view that individual self-seeking behaviour guaranteed a stable economic order; the latter in the idea that the identical motivation could lead only to exploitation, instability and crisis.
Keynes’s genius – a very English one – was to insist we should approach an economic system not as a morality play but as a technical challenge. He wished to preserve as much liberty as possible, while recognising that the minimum state was unacceptable to a democratic society with an urbanised economy. He wished to preserve a market economy, without believing that laisser faire makes everything for the best in the best of all possible worlds.
This same moralistic debate is with us, once again. Contemporary “liquidationists” insist that a collapse would lead to rebirth of a purified economy. Their leftwing opponents argue that the era of markets is over. And even I wish to see the punishment of financial alchemists who claimed that ever more debt turns economic lead into gold.
Yet Keynes would have insisted that such approaches are foolish. Markets are neither infallible nor dispensable. They are indeed the underpinnings of a productive economy and individual freedom. But they can also go seriously awry and so must be managed with care.