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

So what am I? I guess I would call myself a sober optimist...If you are not sober about the scale of the challenge, then you are not paying attention. But if you are not an optimist, you have no chance of generating the kind of mass movement needed to achieve the needed scale.

I was in Bangalore, India, the Silicon Valley of India, when I realized that the world was flat.

American young people have got to understand from an early age that the world pays off on results, not on effort. Not everyone should win a prize no matter where he or she finishes.

The hidden hand of the market will never work without a hidden fist -- McDonald's cannot flourish without McDonnell Douglas, the builder of the F-15. And the hidden fist that keeps the world safe for Silicon Valley's technologies is called the United States Army, Air Force, Navy and Marine Corps.

The unemployment rate today for people with our-year college degrees is 4.1%, which is almost none. That's people switching jobs basically. That tells you that education is the only way up and the only way out. If that is the fact, then we've got to get more of it for more people.

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