We don't see many films in which someone with schizophrenia is the main character.

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.

If you just think about the difficulty you'll never get anywhere.

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.

I think it would be really hypocritical of me to make the films I make, where I delve into people's lives, to say that my life can't be looked at or that I have to be this pristine, isolated figure.

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.

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