I am surprised that in various countries, whether it's the U.K. or the U.S., you see isolationist tendencies that would tend to work against the co-operation, whether it's climate change, immigration, innovation, helping the very poorest. Those are things where you want to think across country boundaries and see a win-win-type solution.

You need to understand things in order to invent beyond them.

Training the workforce of tomorrow with today's high schools is like trying to teach kids about today's computers on a 50-year-old mainframe.

I hope corporations will dedicate a percentage of their top innovators' time to issues that could help people left out of the global economy. This kind of contribution is even more powerful than giving cash or offering employees' time off to volunteer. It is a focused use of what your company does best. It is a great form of creative capitalism, because it takes the brainpower and makes life better for the richest, and dedicates some of it to improving the lives of everyone else.

Making sure all our students get a great education, find a career that's fulfilling and rewarding, and have a chance to live out their dreams ... wouldn't just make us a more successful country - it would also make us a more fair and just one.

There are people who don't like capitalism, and people who don't like PCs. But there's no-one who likes the PC who doesn't like Microsoft.

Ninety percent of the cases of polio are in security-vulnerable areas.