Period films to me are very often alienating to the audience. There's very often a formality. A staunchy quality to them that comes from the misenscene. It also comes from the performances of the actors, because they're acting Victorian which really means that they're just acting the way they've seen previous actors act Victorian.

I don't ever like to feel myself in the position to demand of an actor that they trust I'm going to do something worthwhile. I feel a responsibility to articulate what it is I'm going to do. Whether that's showing them a full script or sitting down with them and describing my ideas in detail. It's a very healthy burden on me as a film director to be able to articulate what I want to do, to inspire actors, rather than just saying, take it on trust I'll be able to do something worthwhile.

What drew me to Batman in the first place was Bruce Wayne's story, and that he's a real character whose story begins in childhood. He's not a fully formed character like James Bond, so what we're doing is following the journey of this guy from a child who goes through this horrible experience of becoming this extraordinary character. That, for me, became a three-part story. And obviously the third part becomes the ending of the guy's story.

To me, any kind of filmmaking that's reactive is not going to be as good as something more inventive and original.

I think the films Insomnia and Memento share all sorts of thematic concerns, such as the relationship between motivation and action, and the difficulty of reconciling your view of the story with the supposed objective view of that story.

For me, Batman is the one that can most clearly be taken seriously. He's not from another planet, or filled with radioactive gunk. I mean, Superman is essentially a god, but Batman is more like Hercules: he's a human being, very flawed, and bridges the divide.

We all wake up in the morning wanting to live our lives the way we know we should. But we usually don't, in small ways. That's what makes a character like Batman so fascinating. He plays out our conflicts on a much larger scale.