People want black and white answers, but it's not one thing or another. I think the only way we're going to make good things is to inspire people and make them feel as though what they're watching is real.

It's always scary making a film as I never set anything up or ask anyone to do anything, so I worry that we'll find a story. I have to trust that a film will come out of the journey we embark on. I have many, many sleepless nights.

The magic of documentary is that I keep being surprised and amazed by the things I film.

Personally, I don't like watching films about victims - people where you're meant to think, 'Oh, this is terrible,' and you go home feeling really depressed.

I don't want the people I'm with on this journey to feel like I'm filming them all the time. I don't want them to constantly feel as though they're being watched. So I will have the camera ready at all times, but I will only film when something is really worth filming. Those are the moments when the person being filmed is usually not aware of it.

I don't make 'issue' films. I like making films about rebels or pioneers or people that are doing something.

I don't have any advice at all. I think we all make the films that reflect the kind of people we are; we all make such different films. There's not just one way of doing it.