You've got to give people a fair chance of saying what they believe, and then you've got to decide, "Do you believe 'em?"

If Warren Buffett made his money from ordinary income rather than capital gains, his tax rate would be a lot higher than his secretary's. In fact a very small percentage of people in this country pay a big chunk of the taxes.

Trees will improve property values, take pollutants out of the air, help with water runoff.

I don't think there's much difference between the two parties. I think whatever their constituents at the moment want, that's what they believe. If their constituents changed, they would change overnight.

We've shown the world that New York can never be defeated, because of its dynamic and diverse population and because it embodies the spirit of enterprise and the love of liberty. And because no matter who you are, if you believe in yourself and your dream, New York will always be the place for you.

I think one of the great dangers here is going and categorizing anybody from one religion as a terrorist. That's not true... That would let the terrorists win. That's what they want us to do.

Fifty percent of the world's population lives in cities. In a couple of decades, 70 percent of the world's population will be living in cities. Cities are where the problem is. Cities are where the solution is, where creativity exists to address the challenges and where they have most impact. This is why, in 2005, the C40 was founded, an organization of cities that address climate change. It started with 18 cities; now it's 91. Cities simply are the key to saving the planet.