I had a mild case of polio - not enough to put me in an iron lung, but enough to keep me bedridden for weeks. As I came out of it, my mom wanted to do something for me. She realized that, growing up in the city, I'd missed out on a lot of nature.

All of the films that I've made are about the country I live in and grew up in... And I think if you're going to put an artist's eye to it, you're going to put a critical eye to it. I've always been interested in the gray area that exists between the black and white, or the red and blue, and that's where complexity lies.

I was never a good student. I had to be dragged into kindergarten. It was hard to sit and listen to somebody talk. I wanted to be out, educated by experience and adventure, and I didn't know how to express that.

Never revisit the past, that's dangerous. You know, move on.

Don't write for money.

There are still deep-seated structural problems that threaten the economic balance in the world: Between the United States and China, for example, but also within Europe. We have taken a few steps toward taming the financial markets, but we haven't come nearly far enough to rule out a repetition of the crisis.

All the men of wealth should remember that everybody in a community has got, in some way, to be supported. I want to see them so that they can support themselves by their own labor.

We live in a world where there is so much wealth. There shouldn't be a homeless person. That's crazy.