"Basically, you're selling a world as an actor, right? I mean it's like any sales person: if you believe in your product, you know your product, you sell it a lot better."

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Souls, I said. I mean, you always wonder if they're real. Even if you believe in them, you still have to wonder: Is my existence just this body? Is there really something more? Do I really have a soul?Uriel's smile blossomed again. You've got it backward, Harry, he said. You are a soul. You have a body.

— Jim Butcher