We need to start thinking about the future of food if we are going to feed 9 billion people in a way that does not destroy our environment.

When I was in college, for the games of that era, I was as hard core as anyone was. I wouldn't say I outgrew it, but you always have to have a finite number of addictions.

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.

Finding information is either a software question or a question of how much information is online.

Humanity’s greatest advances are not in its discoveries – but in how those discoveries are applied to reduce inequity.

... No one is less happy than I am with the performance of Microsoft stock! I've lost tens of billions of dollars this year - if you check, you'll see that's more than most people make in a lifetime!

We make the future sustainable when we invest in the poor, not when we insist on their suffering.