I've always loved 3D. In fact, as a kid, I was exposed to 3D at an early age because my grandfather was a specialist of 3D in cinematheques. And then my cousin put it in 'Science of Sleep' with toilet paper tube cities. But he was a specialist and I always wanted to do something in 3D.

Competition impedes creativity because you present yourself in a way that's going to been seen by somebody outside of you. You're not very much yourself and it limits you.

I'm just thinking of 2001, which I think is the most expensive independent film ever made - which is great, someday I hope I will do one. But I know the parameters when I got onto this project - I have to take care of everyone, make sure that they are all on board, and this process interests me.

I like to use a bit of chaos when I shoot. I think it may be something from the way I shot my first film - I was very scared, of course, and I prepared everything, I wanted to make sure that the characters did the right thing at the right time on the storyboard. But then I realised that in life, there is so much more than what you can predict or write in advance, that when you shoot the story, it's good to leave some gaps where you lose control. I think this combination of chaos and organisation gives a kind of quality.

It's very hard to say I'm surrealist. It's like saying I'm poetic. It's not something you want necessarily to be aware of.

The first dolly track was somebody who had the idea to put the camera on a boat on a canal. So the boat would move very slowly but steadily. So they would see all that surrounds you and you'd see the landscape changing slowly. So that was the first time.

In a way, putting actors deep into this sort of complicated universe frees them from thinking about who they should be. They just are somebody.