"There's a difference between ad-libbing and improvising. And there's a difference between not knowing what to do and just saying something. Or making choices as an actor. As a writer also, as a person who's making a film, as a cameraman, everything is a choice. And it seems to me I don't really have to direct anyone or write down that somebody's getting drunk; all I have to do is say that there's a bottle there and put a bottle there and then they're going to get drunk."