You don't have to get rich to have [fewer] children. It has happened across the world.

I have a suggestion for a new name for the developing world. Let's call it the world.

Let the dataset change your mindset

Health cannot be bought at the supermarket. You have to invest in health. You have to get kids into schooling. You have to train health staff. You have to educate the population.

There are two billion fellow human beings who live on less than $2 a day.

I (naively) thought university training would make you better in following what happens in the world.

My interest is not data, it's the world. And part of world development you can see in numbers. Others, like human rights, empowerment of women, it's very difficult to measure in numbers.