Great read. Here are some of my fave quotes:
"There is a pretty amazing meeting of the minds between Batman and Joker in the middle of the film that we haven't wanted to show to people yet," Nolan revealed when asked about the "Dark Knight" moment he most enjoys watching in the edit bay. "We want to save that for the movie. ... It's very much an acting scene, but I would be lying if I said it was a purely verbal smackdown."
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"I would say the Bruce Wayne character is a lot closer to Harvey Dent than the Joker," Nolan reasoned. "[Dent] is very relatable to Batman, and he certainly makes that point himself in the movie. ... The Joker is an absolute. He is a force of evil and anarchy. He just cuts through the movie like the shark in 'Jaws' or something. This is not a guy with an arc, and it's not about his origin. This is just the rise of the Joker to power through the criminal underworld of Gotham. He's a pretty terrifying figure."
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In "Dark Knight," Nolan explained, Gotham is the Joker's town and everybody else is just living in it.