It's actually a tribute to the quality of economics teaching that they have persuaded so many generations of students to believe in so much that seems so counter to what the world is like. Many of the things that I'm going to describe make so much more common sense than these notions that seem counter to what one's eyes see every day.

Health care is very different from other sectors of the economy in several respects, one of which is the fact that the risk can be very high beyond people's ability. That leads to insurance.

The IMF insisted that both Russia and Brazil maintain their currency at over-valued levels. Who are you protecting when you try to maintain that exchange rate by having high interest rates? You're protecting domestic and foreign firms that have gambled on the exchange rate. And who is paying the price? The small businesses that did not gamble [and no longer can afford loans], the workers who are going to be put out of jobs.

I don't think anybody really thinks that one should get rid of the World Bank. Reform is one thing, but getting rid of it I think would be wrong.

For the United States, our political system is clearly distorted. We have gerrymandering so that there is a situation where a million more voters who vote for Democrats, yet the House is controlled by the Republicans. So clearly, the way our Congress operates is important. The other big issue is the influence of money in politics. It's not only campaign contributions. People like Trump - either you become very dependent on your benefactors or you are very rich.

The median family income in the U.S. is lower than it was a quarter-century ago, and if people don't have income, they can't consume, and you can't have a strong economy. There's significant risk - actually it's no longer a risk - a significant likelihood of a marked slowdown not only in China, but also in a lot of other countries like Brazil, which is in recession. All of the other countries that depend on commodities, including Canada, are facing difficulties. So it's hard to see a story of a strong U.S. economy.

As a rich country, we can, in some sense, "afford" the war. But spending money on the war means that we are not spending money on other things that we could have spent the money on.