I am not a huge gamer. My son knows a LOT more than I do about what is cool on Xbox. I played Halo but the sports games that the whole family can use are the things I use the most. I threw the javelin very very far!

Me and my dad are the biggest promoters of an estate tax in the US. It's not a popular position.

The human body is the most complex system ever created. The more we learn about it, the more appreciation we have about what a rich system it is.

I'm quite worried about the fiscal imbalances that we've got and what that might mean in terms of financial crisis ahead.

I never took a day off in my twenties. Not one. And I'm still fanatical, but now I'm a little less fanatical.

This [philanthropy] work is even more fascinating. It requires us to think harder about how we build partnerships, who we get behind. And yet we get to see progress that in some ways is even more profound than the great advances that digital technology has provided.

It's OK for China to invent cancer drugs that cure patients in the United States. We want them to catch up. But as the leader, we want to keep setting a very, very high standard. We don't want them to catch up because we're slowing down or, even worse, going into reverse.