The obvious mathematical breakthrough would be development of an easy way to factor large prime numbers.

We [Corbis] make it so easy to call up images, whether art or people or beaches or sunsets or Nobel Prize winners.

My experience of malaria was just taking anti-malarials, which give you strange dreams, because I don't want to get malaria.

I'm not big on to-do lists. Instead, I use e-mail and desktop folders and my online calendar. So when I walk up to my desk, I can focus on the e-mails I've flagged and check the folders that are monitoring particular projects and particular blogs.

Microsoft's philosophy is to 'do things better.' And Vista has given us lots of opportunity to do that.

We need to get a broader awareness. People say climate change is really bad, but painting that picture of what you're putting at risk.

If you say to people that there's less violence today than in the past, they would be stunned to hear that. But it's the truth, even though we have awful things happening in Syria or Sudan.