People at the top spend less money than those at the bottom so when you have redistribution toward the top, aggregate demand goes down. Unless you intervene, you're going to have a weak economy unless something else happens. That something else could be a bubble. The United States tried a tech bubble and a housing bubble, but those were not sustainable answers. So I view inequality as a fundamental part of our macroeconomic weakness.

Governments can enhance growth by increasing inclusiveness. A country's most valuable resource is its people. So it is essential to ensure that everyone can live up to their potential, which requires educational opportunities for all.

Drug companies spend more on advertising and marketing than on research, more on research on lifestyle drugs than on life saving drugs, and almost nothing on diseases that affect developing countries only. This is not surprising. Poor people cannot afford drugs, and drug companies make investments that yield the highest returns.

I grew up in a family in which political issues were often discussed, and debated intensely.

I understand why political leaders in the beginning want to be cheerleaders to generate optimism. But to admit that they didn't understand the depths of the problem afterwards, I found a little bit surprising.

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.

We noted the psychological problems facing many of the returning from Iraq veterans - of the 700,000 returning veterans, more than a 100,000 have been diagnosed with problems, but the numbers are likely to get worse, as those with multiple deployments return. We should have valued the loss of life as a result of these suicides, using the same procedures we used for the loss of those who died in combat.