This is all about having great leaders who can drive agile innovation and agile decision-making.

Google's not a real company. It's a house of cards.

Almost three years ago, when I retired, my wife and I were talking about our philanthropic work and how does one help give opportunity, particularly to kids growing up in very disadvantaged situations.And my initial kind of sense was, the government does that primarily, and what we should mostly do is pay our taxes. My wife said, no, I don't think that's quite right for us. We need to do more. We can do better.

I like to tell people that all of our products and business will go through three phases. There's vision, patience, and execution.

This is a great opportunity for Don, and I wish him success. I am incredibly proud of the work and vision culminating in Xbox One. I'm particularly excited about how Xbox pushes forward our devices and services transformation by bringing together the best of Microsoft.

I meet with Satya [Nadella] what probably amounts to four or five times a year - either to brainstorm something or just as a shareholder, we'll sit down and chat. That's always quite helpful for me and hopefully him in terms of thinking things through. I still have a number of friends and colleagues who occasionally want to brainstorm or chat about something, and that's always fun.

Not only because the product wasn't a great product, but remember it took us five or six years to ship it. Then we had to sort of fix it. That was what I might call Windows 7.