If I weren't making documentary films, I suppose I'd be teaching.

We all use dishwashers every day and yet none of us would say that we're experts on dishwashers, but somehow we all think we're experts on movies.

It can be difficult to present mental illness in film without resorting to devices that, if not handled well, can seem heavy-handed or cliché.

I felt like any individual's recovery was more important than the film I was making. And I actually felt that my presence was a form of witness that communicated to the people I was following that their lives mattered.

In the same way that we want to expand mental health service for people with mental illness, we also need to make sure that our police officers are getting the mental health help they need.

If the subject is no longer living, the immediate question is do you have enough first-person material to really get that story across. You'd like to avoid it just being other people's memories and interpretations.

I think that every film should have its own structure, and that's the beauty of film language - is that we get to express that deeply individualistic side of ourselves.