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 one of the most difficult things about the lifestyle is that when it's winter, and there is no running water, you still have to go outside to use the bathroom. You know, we all live very comfortable, no matter what socio-economic level we're at - if you have electricity and running water, you live better than the kings of the 16th century.

I think my ultimate directorial style is 'play.' In reference to theater, it's called a play - I believe in that noun, and the verb that goes with it.

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 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.

Essentially, no one can control what other people think of the final outcome. Once it's done, the audience will like it or not, they may even think I'm an idiot. They can also think I'm brilliant or whatever, I can't control that. What I can control is the joy in putting it together, the process of the work itself. I try and create an atmosphere where we're all enjoying the work. That's the only thing you can hold on to, the only true thing.

When I'm directing, I really try not to be tied to anything. I don't even have the sides in my hands. I have other things - ideas that I want to make sure I don't forget or that I want to accomplish. The endeavor isn't about propping up the screenplay; but about the communal effort of exploration from a lot of different departments - the actors, the DP, the costume designer - all these people and myself.