I do get stressed at times, but I love what I do as an actor. This is the part that I don't like. I don't actually like talking about - I wish I could just go and get on with my job, because I love getting a script, breaking it down, working with other people, bonding with other people, fighting with other people, and out of those arguments, creating something that nobody expected and seeing it all come together. Telling a story, having an impact on people's lives, moving them and making them laugh.

I was training to be a lawyer... I was president of the law society at Glasgow University, and my bass guitarist was my secretary of my law society; the lead guitarist and writer worked at the law firm that I worked.

When I'm making a movie, it's making use of my creative juices, and it fills me up with what really is - I think my purpose here is to tell stories.

Theres a great sense of achievement, testosterone, fun, being able to live out your masculinity when you play an action role or an action-adventure or a real tough-guy role.

Whenever I watched this movie ["How to Train Your Dragon"], I thought, "That's where I want to be. I want to be up in that sky. I want to be flying through the clouds and be living in that environment." So I think if I had a dragon, I would spend most of my time up in the air all over the place and taking in this beautiful planet.

When I start a movie, I already feel like I'm in it. I'm not a jobbing actor anymore; most of the films I do, I'm involved with development. Some, I've taken from scratch, and worked so heavily on the script, I'm embodying a lot of the character by the time I even get close to filming, because I've asked so many of the questions that I do. There is nothing better than being able to ask all the questions, do all the work. It's when you let it go that you fly.

I have a level of fear going into every project, and that's what keeps me going.