If you have democracy, people will vote for washing machines. They love them.

Half of the energy is used by one seventh of the world's population.

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.

Beyond 2050 the world population may start to decrease if women across the world will have, on average, less than 2 children. But that decrease will be slow.

If you have democracy, people will vote for washing machines. They love them.

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

Avoid war, because that always pushes human beings backward.