If you followed this economic crisis and you do not think that the world is getting flatter, you are not paying attention. We saw the entire global economy at one time acting totally in sync. The real truth is the world is even flatter than I thought. Our mortgage crisis is killing Deutsche Bank. You still don't think the world is flat?

No two countries that both had McDonald's had fought a war against each other since each got its McDonald's

When people get frustrated, it's when they feel they are living in a context that deprives them of dignity, deprives them of justice and deprives them of the freedom to realize their full potential, and that to me is what the Arab awakening was all about. I think it applied to every country, and so I have been an unmitigated supporter of it.

What we do know is that the planet is going from 7 billion people today to 9 billion. More people want to live like us, drive American- size cars, live in an American-size home, and eat American-size Big Macs. What does that mean? It means that energy demand is going to be going up.

Scientists tend to focus on what they don't know more than what they do know. And there are a lot of things we still don't know about the climate. But we know the difference between climate variability and climate change, and right now the amount of carbon in the atmosphere is well outside the variability pattern - and that's quite quantifiable.

If e-mail had been around before the telephone was invented, people would have said, 'Hey, forget e-mail! With this new telephone invention I can actually talk to people!'.

In a hyper-connected world where average is over, there is one thing we know absolutely for sure: Every good job will require more education.