When I was about fifteen, I went to work at Yosemite National Park. It changed me forever. Nature had carved its own sculpture, and I was part of it, not the other way around.

'Butch Cassidy' was the only film I ever enjoyed making.

We've poisoned the air, the water, and the land. In our passion to control nature, things have gone out of control. Progress from now on has to mean something different. We're running out of resources and we are running out of time.

I'm not much interested in sport just as sport. I wouldn't be interested in making a golf film or baseball or fishing film.

I never had to worry about divestment because I never invested.

I guess the optimistic thing is that those people in Congress who are climate deniers, I think their time has run out.

The tough thing about adulthood is it starts before you even know it starts.