I think that for the developing world there are many versions of capitalism, and countries have to choose one that's appropriate.

During my three years as chief economist of the World Bank, labor market issues were looked at through the lens of neoclassical economics. A standard message was to increase labor market flexibility. The not-so-subtle subtext was to lower wages and lay off unneeded workers.

I've always been sceptical about the notion that the market is a person you can engage in an argument with, and that that person is an intelligent, rational, well-intentioned person: it is fantasy. We know that ... the market is subject to irrational optimism and pessimism, and is vindictive ... You're dealing with a crazy man ... Having got what he wants he will still kill you.

It is unlikely that others would even demand their money back overnight, for doing so would lead to the value of the dollar plummeting; what they would get back with be worth little. But what we are already seeing is an erosion of confidence of the dollar, which is seeing the dollar fall in value.

The extra curricular activity in which I was most engaged - debating - helped shape my interests in public policy.

World War II was really unusual, because America was in the Great Depression before. So the war did help the US economy to get securely out of this decline. This time, the war [in Iraq] is bad for the economy in both the short and long run. We could have spent trillions in research or education instead. This would have led to future productivity increases.

The military is focusing only on the short run costs. If they don't provide appropriate body armor, they save some money today, but the healthcare cost is going to be the future for some other president down the line. I view that as both fiscally and morally irresponsible.