I would say that playing this character has caused me to think about a lot of things. He's always questioning himself and trying to get back to something he lost touch with and trying to find forgiveness. Everybody struggles with these things to some extent in their life.
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This friend of mine said he was surprised to find that - I don't think it's quite a majority - a bigger percentage of actors are introverts than extroverts. It was a big surprise to him. Now, I know me, and I'll do anything if I'm playing a character. Or anything that's true to the character, anyway. But in real life I'm a little more withdrawn.