I don't think the Arab Spring had much to do with energy. I think it was just the opposite, in fact. I think the Arab Spring happened because particularly young people knew they were living in a context where they could not realize their full potential, that they are being kept down by their own governments.

We've given Iraq six months and I don't think things are really working out, so we should probably bring our troops home.

Something really big happened in the world's wiring in the last decade, but it was obscured by the financial crisis and post-9/11. We went from a connected world to a hyperconnected world. I'm always struck that Facebook, Twitter, 4G, iPhones, iPads, high-speech broadband, ubiquitous wireless and Web-enabled cellphones, the cloud, Big Data, cellphone apps and Skype did not exist or were in their infancy a decade ago.

We have to be the best global citizens we can be.

Optimists are usually wrong. But all the great change in history, positive change, was done by optimists.

Every sport needs its temple, its cathedral.

The Dell Theory of Conflict Prevention argues that no two countries that are both part of the same global supply chain will ever fight a war as long as they are each part of that supply chain.