It's very difficult to say anything in Icelandic. I can say "takk," which means "thank you." That's about all I learned.

I've always been a bit of a self-doubter, I think a lot of actors are. I still am.

I kind of weirdly fell into being an action hero...I have no f- idea how that happened. You have to remind people that you want to act rather than just run around

When I'm applying for a new passport, or something, someone will call me Christopher. Other than that, no one ever calls me Christopher.

When you're a lead role, I'm learning that you set a tone for the movie in a way, like a director does, or like other actors do. But it seems like you set a mood on set.

I like a good cry every now and then. It releases something. There are times in my life when I'm meant to cry, but I don't actually cry. But then I can be walking down the street and it's been a few months, and things get on top of me - that's when I find myself crying.

It's a nightmare if you're working with someone you don't get on with, especially if you have to be in love with them.