The first idea of Captain Fantastic was a pretty radically different one. The genesis had to do with parenting and questions about parenthood and fatherhood specifically. I have two kids and I was grappling with what my values were and what I wanted to pass to my children. So I was positing different kinds of parents and different ways of parenting. I played with various ideas - very permissive parenting, very restrictive parenting and then I came up with the character of Viggo Mortensen, and much of it was aspirational, some of it was autobiographical.

The real truth - like anything, you have an idea about something you might write and it changes. People reflect on it or you get other ideas and maybe your original idea is radically different than how it ends up being. It's not a theorem. You don't sit down and prove something. You start with an initial idea and it grows and grows. The math of the narrative changes. In some ways your original document and what the film ends up being are quite different.

The foreign audiences are somewhat surprised and happy to find an American film that asks questions about American culture. There's a certain kind of cultural imperialism that we practice. Our films penetrate every market in the world. I have seen and have had people reflect to me, maybe not in so many words or specifically, but I get the subtext of it - they're somewhat charmed and surprised and happy to see an American film reflect on our culture. Because they see other cultures reflect on our culture but they don't see US culture reflecting on itself in quite the same way.

Film is a pretty poor medium to deliver a message. I'm not trying to do that. I'm just trying to ask a lot of questions and hopefully you can draw your own conclusions about whatever meaning might be there or what point there is; but I was conscious of wanting to create something that for a lack of a better word had a positivity and earned that.

The first idea of Captain Fantastic was a pretty radically different one. The genesis had to do with parenting and questions about parenthood and fatherhood specifically. I have two kids and I was grappling with what my values were and what I wanted to pass to my children. So I was positing different kinds of parents and different ways of parenting. I played with various ideas - very permissive parenting, very restrictive parenting and then I came up with the character of Viggo Mortensen, and much of it was aspirational, some of it was autobiographical.

I think that we are all the heroes of our own story, and I think life comes in all shades of gray. Personally, I love movies that exist like this, where you think someone can behave both heroically and like a villain.

A lot of directors on a base level are fearful of actors and maybe even distrustful. I love the craft of acting and I love actors so I think they can probably sense that. They also know that I understand what their process is, having done it myself. The thing I come back to over and over again is that for most people who are not analyzing it from a critical point of view, most iconic film moments are actor moments. We show up to commune with another human being and their experience. We don't show up necessarily to watch a really cool dolly shot.