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've been able to carve out spaces for myself. At Sundance, I'm in the mountains - my property is private. I get on a horse and ride for three, four hours. Sometimes five. I get lost. But when I'm in, I'm in.

I'm interested in that thing that happens where there's a breaking point for some people and not for others. You go through such hardship, things that are almost impossibly difficult, and there's no sign that it's going to get any better, and that's the point when people quit. But some don't.

Any time I saw people treated unfairly because of race, creed, whatever - it struck a nerve.

For me, personally, skiing holds everything. I used to race cars, but skiing is a step beyond that. It removes the machinery and puts you one step closer to the elements. And it's a complete physical expression of freedom.

In 1973, I was shown a graphic of how dependent the United States was on nonrenewable resources like oil and coal and that little was being done to change that. It seemed irrefutable that we needed a change in direction or we'd be paying a huge price down the road. That's when I made a commitment to become a political activist.

Essentially, my kids grew up with the emphasis on the environment because I became a political activist in about 1969 and it was not an easy time. Those were the days when the oil and gas companies pretty much controlled the show and anybody speaking about solar energy or carbon energy would get smashed down as being a radical or a tree-hugger or what have you. So I was out there feeling very often alone and my kids would get that.