I was at the World Bank and a commission reviewed our work on inequality for the U.S. Congress or somebody, and the head of the commission said to us: "You are spending taxpayer money to study issues like inequality? Which goes directly against capitalism and growth." That was the perception, that it should not be studied.

Most people believe that inequality is rising - and indeed it has been rising for a while in a number of rich countries. And there is lots of talk and realization of this. It's harder to understand that at the same time, you can actually have global inequality going down. Technically speaking, national inequality can increase in every single country and yet global inequality can go down. And why it is going down is because very large, populous, and relatively poor countries like India and China are growing quite fast.

In the U.S. when people like me started writing things about inequality, the economic journals had no classification for inequality. I couldn't find where to submit my inequality papers because there was no such topic. There was welfare, there was health issues, there was trade obviously. Finance had hundreds of sub groups.

What is different between national inequality and global inequality is you have another element there that is sometimes forgotten: what matters for global inequality is relative growth rates between poor and rich countries.

Well, you can do whatever you want, but just don’t call it inequality. Put the word poverty there. Because we have many rich people on our board, and when they see the word poverty that makes them feel good, because [it means] they’re really nice people who care about the poor. When they see the word inequality it makes them upset, because [it means] you want to take money from them.

While you can say that the problem of the middle class in the rich countries is too much globalization, the problem of the people who are very poor is really that they are not included in globalization. For them, the success of their own countries at becoming part of this international division of labor would be good news.

If, for example, each of us had the same share of capital in the national total capital, then if the share of capital goes up it's not a problem, because you get as much as I do. The problem is that capital in capitalist countries is very heavily concentrated, especially financial capital. So then if the share of income from that source goes up, that actually exacerbates inequality.