I was not aware of how much I loved 'Canoa' until I saw it after doing 'Y Tu Mama Tambien' and realized that my voice - over about the story's historical context - that narrator - came from 'Canoa'.

Y Tu Mama Tambien' is one of the first unrated movies to be nominated for an Academy Award for Best Original Screenplay. But many video stores won't take a movie that's not rated, so I had to make the movie an R.

The two real leads in 'Children of Men' are Clive Owen and the social environment. You know, this same movie without the social environment maybe is just like a generic chase movie.

I love that process in which there is no safety net. Then the actor also can allow mistakes, because there's no such a thing as a mistake. You're working with good actors, that thing that starts as a mistake becomes actually the life of what is going to follow in the scene. I find that it is fantastic, and for me it is easier than for the actors.

What's the point of being an Australian guy traveling through India if you are going to go to India to meet other Australians?

I've been very lucky in that the studios really respect me and they give me all my creative freedom. But nevertheless, they are inputs, they have opinions. It's the same thing for me as if you're in a shower and you're coming up with a tune, with a melody, but there are 70 people trying to sing their own melody at the same time. So you have to focus and concentrate, and not lose the track of your melody.

As a kid, I wanted to be an astronaut. And my own passion was that I wanted to be a film director. I realized that being an astronaut was not going to be an option, so I said, "Well, I'm going to be a director and do films in space."