I'm not a macroeconomics person.

If I'd had some set idea of a finish line, don't you think I would have crossed it years ago?

We will never make a 32-bit operating system.

If you rely too much on the people in other countries and other companies, in a sense that's your brain and you are outsourcing your brain.

In a system of capitalism, as people's wealth rises, the financial incentive to serve them rises. As their wealth falls, the financial incentive to serve them falls, until it becomes zero. We have to find a way to make the aspects of capitalism that serve wealthier people serve poorer people as well.

My dream is that every child has enough food to eat, good medical care, and the chance to go to school and even attend college.

Whenever you have a few setbacks, the idea that half as many children are dying now as back in 1990 and so... it was over 12 million a year, now it's less than 6 million a year. We have a clear path to get that under 3 million a year and we know what to do. And this generation of young Africans is a very large group.