There have been so many interpretations of both Batman and the Joker in the comic books themselves over the decades, from one extreme to the next, and in the media, from one extreme to the next.

Doors will slam in your face. You must pick yourself up, dust yourself off, and knock again; it's the only way to achieve your goals in life.

I think every filmmaker makes different choices. I remember in the early days, in some of the early comic book movies, certain white dissolves were used that would try to emulate the look and feel of comic book panel borders. Sometimes they would frame shots in panels or circles that gave it a real comic book feel.

When you are dealing with approximately two-plus hours every few years to do a story, you don't have the luxury of having excessive screen time to explore, in detail and in-depth, lots of other subsidiary or ancillary supporting characters.

There's so much technology [in the Batman movies] that's unbelievable and seems unreal, so it's hard trying to get the audience to believe that it all exists. So we got Morgan Freeman to tell them that it's real. And that is why Christopher Nolan is a genius.

In a sense, comic books are frozen movies. If you look at a comic book, you are generally seeing the storyboard for a film. The great advantage of comic books, over the years, has been that, if they are frozen movies, they are not limited by budget. They are only limited by imagination.

They [comic books] are not a genre, they are not something to get hot and cold from one year to the next, they're the exact same thing as books and plays: they are a source of great stories and colorful characters.