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

I've always believed the world would be a better place if more people everywhere have a chance to shape their own future and realize their full potential. I think that is what life is about.

What if we're wrong and there is no climate change? Well, by doing everything possible to address it, we will still use less water, stimulate new energy savings and, in time, money-saving technologies, enjoy cleaner air, and preserve more forests and trees and animals.

The country that owns green, that dominates that industry, is going to have the most energy security, national security, economic security, competitive companies, healthy population and, most of all, global respect.

Never before in the history of the planet have so many people, on their own, had the ability to find so much information about so many things and about so many other people.

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!'.

The great thing about cheap natural gas, again it's cheap, and it provides a cleaner alternative to coal. But it's still a fossil fuel, and because it's still a fossil fuel, it still emits carbon.