Everyone needs a coach. It doesn't matter whether you're a basketball player, a tennis player, a gymnast or a bridge player.

Every new change forces all the companies in an industry to adapt their strategies to that change.

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.

Security is, I would say, our top priority because for all the exciting things you will be able to do with computers - organizing your lives, staying in touch with people, being creative - if we don't solve these security problems, then people will hold back.

Certain teams are more careful in what they write. They generate less bugs. You can know that but it still doesn't mean there might be there might not be one bug that would be bad to ship the product with.

I'm not somebody who goes to church on a regular basis. The specific elements of Christianity are not something I'm a huge believer in.

In low-income countries, getting to a health post is hard. It's very expensive.