There's a difference between being able to make long distance phone calls cheaper on the Internet and walking around Riyadh with a PDA where you can have all of Google in your pocket. It's a difference in degree that's so enormous it becomes a difference in kind.

I have no problem with a war for oil-if we accompany it with a real program for energy conservation. But when we tell the world we couldn't care less about climate change, that we feel entitled to drive whatever big cars we feel like, that we feel entitled to consume however much oil we like, the message we send is that a war for oil in the gulf is not a war to protect the world's right to economic survival-but our right to indulge. Now that will be seen as immoral.

Capitalism makes people unequally rich. Communism makes people equally poor.

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

Every golf course should have its carbon rating on the scorecard, alongside its Course Rating, Slope, par and yardage.

Golf has an ambivalent relationship with the environment. On one hand, it's a great preserver of open spaces. Golf doesn't pave the world - it helps to green the world. But the downside is, it uses a lot of fertilizer, pesticides and water. And this is in a world where we know that synthetic fertilizers and pesticides are toxic, and water is more and more scarce. Golf could do a lot more.

Almost all the students who make it to Caltech, one of the best scientific universities in the world, come from public schools. So it can be done.