Women had always been thought of as looking after the family when men go and earn an income and they're the bread earner and so on. So there is a kind of generation of inequality, [and], on top of the fact, women have pregnancies and periods, [and] when the children are very small, there are greater demands on their time. So one way or another women have had a pretty rough deal in the past, and there's no reason why that should continue, and any country that has tried to remedy that has succeeded in doing so.

The understanding that women are not inferior across the world, it's something that you can get from school, not only from the book but also from chatting with other kids. It's a big impact. One of the curious things is that even when - and this we found from studies - the schools are doing pretty badly in terms of their education, about mathematics and literature and language, going to school transformed people because I think the action of schooling, the activity, is very important.

The Arab world is also the world that produced some of the greatest improvements in mathematics and in science. Even today, when a Princeton mathematician does an algorithm, he may not remember that "algorithm" derived from the name al-Khwarizmi, who is a ninth-century Arab mathematician.

To say that certainly America was very lucky to get a large amount of land, and the native Indians were extremely unlucky to have white men coming over here, is one thing. But to say that the whole of the American prosperity was based on exploiting the indigenous population would be a great mistake.

There’s a clear and strong connection between fertility reduction and women’s literacy and empowerment, including women’s gainful employment. If you look at the more than 300 districts of India, the strongest influences in explaining fertility variations are women’s literacy and gainful economic employment.

Human ordeals thrive on ignorance. To understand a problem with clarity is already half way towards solving it.

It was incredible to me that members of one community could kill members of another not for anything personal that they did but simply based on their identity.