Adult characters are all the things they've encountered over time. But kids haven't accumulated all the life experience, all the regrets. They tend to be more in the moment, more willing to play, to be joyful.
People will like to say that 'Eastern Promises' is brutal, but the only reason they say that is because the scenes stick with them. They are realistic. They are in-your-face and you see the consequences. It's not a bunch of quick editing cuts.
I suppose a good director is like a teacher. I think that someone like David Cronenberg was very much like a teacher, because there's an openness, but a certain set of rules of behavior, and a certain conduct expected. But there's an atmosphere that's relaxed and conducive to exploration, and that is created by someone like Cronenberg.
Being an actor, imitating to the point of inhabiting the lives of others, may simply be a way of continuing to do what I learned to do as a boy - to travel, mentally and physically.