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.

Personally, I'd like to see more of our leaders take a technocratic approach to solving our biggest problems.

I hope you will judge yourselves not on your professional accomplishments alone, but also on how well you have addressed the world's deepest inequities...on how well you treated people a world away who have nothing in common with you but your humanity.

With Windows 8, Microsoft is trying to gain market share in what has been dominated by the iPad-type device. But a lot of those users are frustrated. They can't type. They can't create documents.

By helping us to be more productive, technology lets us to spend less time focusing on survival, and more on solving other challenges.

We are seeing smarter philanthropy, more philanthropy, and that's true world wide. So it's kind of a movement that has a lot of accomplishments, even though as a percentage of the economy, it's still only a few per cent.

The more you learn, the more you have a framework that the knowledge fits into.