What I really like to do is write 'genre' stories without a cartoonish element. I did the same with 'Da Vinci's Demons,' and I'll do the same with 'Man of Steel.'

I like telling stories of imperfect people because most people are imperfect.

What Christopher Nolan and I have done with 'Superman' is try to bring the same naturalistic approach that we adopted for the 'Batman' trilogy. We always had a naturalistic approach; we want our stories to be rooted in reality, like they could happen in the same world we live in.

Mysticism and the supernatural are embedded in the show - it's called 'Da Vinci's Demons' for a reason, and it's not just metaphorical.

I did three or four weeks of work on 'Godzilla;' it wasn't a page-one rewrite or anything like that. The term is 'script doctoring,' is what I did on it.

'Batman Begins' came out and it was really successful, and it had gritty naturalism. And suddenly... I can't tell you how many movies I was pitched where it was, 'We want to do what you did with 'Batman' but with 'Teenage Mutant Ninja Turtles,' or whatever.