Of course I am a child of European culture. There are a number of great directors from which I learned, but there is nobody in particular I got inspired from.

In terms of cinema and filmmaking, there are certainly the unexpected gifts that the actors bestow on you. Film is always a question of compromises with respect to what you originally intended.

The trouble is that when you read criticisms about the other films that I've made you get the impression that they're all about themes, or problems, or ideas. But those are actually things that develop out of characters, out of images and out of other things. These more abstract things develop while working on the material, and out of it. It's not a theoretical exercise from the outset.

I'm not someone who enjoys long talks, long rehearsals. I'm very technical: I tell my actors, you come in, you sit down, you pick up a coffee, you look here, you say the line. We try it with the cameras rolling, and if it doesn't work, we adjust it until it does. It's very simple.

For me, it's always difficult when a historical film claims to depict or represent a reality that none of us can know, that is always different. It's always the case. We never know what happened then. So my approach with the narrator is to question that, to leave that open, to underline the fact that this is uncertain.

Because I'm the author of my screenplays I know what I'm looking for. It's true that I can be stubborn in demanding that I get what I want, but it's also a question of working with patience and love.

It's difficult because you can't generalise about these things. But in essence, you deal with children as simply as you deal with actors - you have to show a certain sort of respect. You deal with them lovingly and protect them, but if you protect them enough then they're open to engage with what you want to do with them.