It's a constant learning process - not just what you need to learn for the character or as far as good actors - but as an actor, there's no limit. Every time now, you're learning so, I think that's a good thing though.
On set, the playground for the character, how much it takes varies. Is it like ballet, is it like jazz? The content always lends itself to the form, and it's really not mathematics.
You try to get to know your character as best as you can before you start filming - whats written and not written.
For me, playing a really bad character is about figuring out what brought the person to where we need him.
I think carrying your gut, or your instincts, through all the learning, is one of the most important things. You learn to prepare for a part in different ways, you learn to experiment, what you do for the character - you try working in different ways.
I feel like a lot of the films I do, part of the reason I like doing them is I'm not 100 percent sure what it's going to be. It's exciting. I read an equal amount of very generic scripts, and you kind of know exactly what those are and that doesn't whet my appetite. I already know what it is or I already know what the character is. It's just a lot harder to get interested.