For a long time, the film business was a single-digit business on investment return. Now, because of home video, it's a low double-digit business, and the studios want to make sure it doesn't go back into the single-digit business.

We live in a much more complicated time than when Superman was created 75 years ago. Or even when Superman The Movie was created in the 70s. There are great advances but with those come a great many complications.We felt that the character needed to grow up in that kind of environment and had to face those kinds of colossal choices that were not going to be easy. It's difficult to figure out the right path. And even if you do good there are causalities to your choices. We thought it would be compelling.

I think that Superman is the pinnacle of the DC Universe. Our feeling always was that you need to get Superman right. That was also our goal. We didn't want to ignore that this universe exists.

At least you used to know 'there's the villain, there's the good guy', but today there are more shades of grey.

There is an expectation with a superhero film that there is spectacle and action but there also has to be heart. Striking that balance is really important.

Even in our business, as is the world, we are in the age of specialisation. You see a lot of names of producers on a movie. If you have the idea, if you oversee the development, if you oversee the production, if you help package the movie, you sell the movie - you can be a producer. There's not a lot of us who do the whole gamut.

People tend to think about God more when the clock starts to wind down.