The thing about 'Dark Knight' is its objective is to set Batman into your world, so that you can imagine the moral dilemmas he faces are exactly parallel to moral dilemmas that you would face in this world, today, if you were out there fighting crime dressed like a bat.

I'd say the purest experience for the movie is not to have read the book because I think when you've read the book you're just ticking off boxes. I think that after you see the movie, reading the book is a cool thing. I always say the movie's not meant to replace the book. That's ridiculous. I'm a huge fan of the book.

I've always been influenced by the human form. I'm a big fan of that Shakespeare quote. I tend to leave out the bad part of the paragon of animals quote, because I have this sort of Ayn Rand aesthetic. It was always one of those quotes that inspired me.

I think up to this point, it's been difficult to suggest a world where Batman and Superman and Wonder Woman and others could exist in the same universe. That was one of the things I really wanted to try and get at. Not to mention, the amazing opportunity to bring those characters and have those characters tell an important story, their own story, within the confines of a film.

I love comic books - maybe to a fault sometimes.

I imagine the film ["300"] as if I was a Spartan and I had never seen an immortal or a Persian, or an elephant or a rhino for that matter.

You can't teach anyone. You can't tell anyone. That's the thing you have to sit down and experience in order for it to mean anything. You can't intellectualize it. It's like why movies are cool. It's a combination of pictures and design and acting and music can create an experience that is outside of the experience that you can actually have in reality, which gets to my motion picture philosophy. People are like, 'aren't you trying to make the movies as real as you can?'