I play characters, of course, that interest me," he said. "But it's true I have a fascination for (darker characters), because there's an enormous possibility for ambiguity, and that's also something I really like. Because it fits in my philosophical notion of life, which is that people are not always necessarily who you think they are. Maybe they all pretend to some extent, they pretend something so you perceive them the way they want to be perceived -- and that is an interesting concept.