The trick with sequels is, you have to give people what they liked before, yet be innovative enough so they don't feel like they're seeing the same movie.
Harold RamisWhen you're a big enough part of the process that the Writers Guild gives you a lot of credit, that's a good thing. It tells me that I've had a significant impact on the film as a writer.
Harold RamisWhen I've written for Bill Murray - I've written six films for him - people would read it and say, "Oh, that's so perfectly Bill." He'd read it and say, "Are you kidding? I can't say these words." So it's all about perception.
Harold Ramis