All I've tried to do as an actor is follow the good writing. That's been my main drive. It's not always possible, so when you do come upon it, like when I came upon this, you realize pretty quickly this is something you need to be involved with.

But television affords you, what you just described, to - over the course of 18 hours, now that we're doing a third season - tell the story of this man. You're not under any obligation, really, to do massive expositional stuff at the beginning. You're at liberty to say, "Come with us on this journey," and, gradually, you become aware of what his motivations are, what drives him, what his weaknesses are, what his strengths are. That's what I think's sucking people into these worlds, because it is kind of like a novel, you just go really, really deep.

I personally think if something's not a challenge there's no point doing it because you're not gonna learn much.

I’ve never done a film for the money

In terms of trying to improve as an actor, for me it's always important to return to the stage. After doing a piece of theater for a prolonged period, I can think I must have surely improved in some way as an actor - you must be fitter than you were prior to doing it. For me, theater is very, very important in keeping things fresh and dangerous.

I think every director has a different methodology.

I'm definitely a frustrated musician, though it's more in terms of wishing I was a better guitar player and songwriter. But I've never regretted becoming an actor instead. I think it's been a more pure form of self-expression for me. I luckily found something that I could aspire to be good at, whereas I never... I think I'd never quite reach that level of artist that I enjoy in the music world.