We have to fight the terrorists as if there were no rules and preserve our open society as if there were no terrorists.

We've gone from thinking the fuels that powered our growth were inexpensive, inexhaustible and benign to understanding they are exhaustible, expensive and toxic. Once you frame the problem that way, people will look at solutions differently.

The Arab awakening was like watching elephants fly: something you didn't expect, something you haven't seen before, "Wow, elephants fly."

Several technological and political forces have converged, and that has produced a global, Web-enabled playing field that allows for multiple forms of collaboration without regard to geography or distance - or soon, even language.

The Arab awakening has been, up to now, a lot about freedom from dictatorial regimes - Syria, Yemen, Libya, Tunisia, Bahrain and Egypt. But once you got freedom from, then you need freedom to. Freedom from is about destroying things. Freedom to is about constructing things, constructing the rule of law.

Supply chains cannot tolerate even 24 hours of disruption. So if you lose your place in the supply chain because of wild behavior you could lose a lot. It would be like pouring cement down one of your oil wells.

Many of us who grew up playing golf know that our kids aren't doing it. A great way to enhance the game, make it cool again and bring back some of the interest among younger people is to make golf the greenest sport in an environmental sense. Every course's greenkeeper should think of himself or herself as the greenkeeper: responsible for preserving the green, not just the greens.