No one ever gets to see Foley artists at work, and they're so strange. They see the world differently: things as things that might make sounds that sound like other things. They see the whole world that way - like when you're a house painter, all you see is a bunch of houses that need painting.

I've long believed that anybody who is in the act of remembering childhood is a poet, because you're thinking back on times when you were making false models of the universe. Everything is kind of irrational and poetic then.

I started making movies in my late 20s, that time in an artist's career that often sees artists just imitating things that he or she loves. I just wanted to be great like L'Age d'Or vintage Buñuel. I wanted to be Busby Berkeley, for crying out loud! I wanted to have chorus girls stomping their heels in my casting office. I wanted to be Erich Von Stroheim monogramming underwear for extras. So I started off my career doing that, and that was fun, but I realised I wasn't very good at it.

I've never made movies to reach millions of people.

I went to see Chicago after I finished shooting, and say what you want about it, but that thing was so meticulously planned. It was planned like NASA planned its trips to the moon. It made me feel like some sort of horrible dilettante.

I think I've indulged in a pathological, chronic nostalgia over the years, which I've traced back to my childhood. I was the last of four children, born well after the other three, so I was left on my own in a big, quiet house where most of the people had left, and even the echoes of a happy family had all died out.

You also convert real memories, whatever that means, into film versions of those memories. Because by the time you've finished the project you can't remember the real memories anymore, you just remember the film versions of them. And then if the film failed you have distaste for them. So I don't think about that stuff anymore.