I'll spare you the actors' pretentious rubbish, but a face reflects experience, so if you concentrate on a character something happens to you physically. Many actors look at the costume before the part, and that seems crazy to me. It's much more fun to be ugly. Not that I think I'm ugly, but I've never considered myself good-looking.

The darker the character, the more interesting.

A lot of the characters I play have problems, they are marginalised, they have serious psychological problems, problems with relationships, with childhood. These are big subjects, big subjects. You can't balk at work like that. As an actor, that's as good as it gets.

For me, it's a voyage of self-discovery. I'm able to go on a set and to explore situations, personalities, people and characters that are close to me, or maybe not. Through going there and experiencing these different people and their situations, it helps me to get oriented and develop as a human being. So, acting is fundamental to who I am.

I often have scripts sent to me with allegedly Scottish characters where I end up telling them, 'You're going to have to rethink this whole thing!