I watch these actors who when you go to buy a pint of milk you see them smiling on the cover of 20 magazines. Then when you see them in a film it's hard to believe the character because you just see them everywhere.

I was a little bit wary of playing Nicholas. In the script, which I think is true of the novel and the film, he's the only character not singing and dancing in a musical style. Playing someone who is the personification of good is a little difficult.

I always think it's better to take a smaller role in a great film rather than a leading role in something that you don't have complete faith in.

So I try not to do press and if you can keep the balance of keeping a certain degree of anonymity and do interesting work then you can hope for a degree of career longevity.

There's nothing ever monetarily or fame-seeking or any of the other motivations that sometimes go hand-in-hand with this profession. To me, it's just not like that. I'm on a journey of self-discovery and trying to avoid total existential crisis. That's the kind of operating zone that I'm approaching this business from.