But I think there's something wonderful and extraordinary about climbing on your own and just that kind of relationship to the environment. I'm very addicted to the mountains. You know, so, I do like that solitude.

Acting is a sort of pressure cooker that allows the fizz to come out the top. God knows what I'd be like if I didn't have that.

My first job when I got my equity card was acting in 14 plays back-to-back. Playing that many roles, you look for ways of differentiating the characters physically, which goes hand in hand with understanding them psychologically.

Hoodwink is a product of his environment. He grew up in Belfast, he was part of the UDA and he fought for what he believed in - or was brainwashed into believing - because of the people that surrounded him.

What I'm saying is people like Hoodwink are not kind of evil villains, they're part of humanity. We can choose to disassociate ourselves from them and we can choose to pretend they're not there, but they are. We're all together in this.

Motion capture is exactly what it says: it's physical moves, whereas performance capture is the entire performance - including your facial performance. If you're doing, say, martial arts for a video game, that is motion capture. This is basically another way of recording an actor's performance: audio, facial and physical.

I was thinking about that. I was thinking, this is like our Boyhood; this is like our getting together over 12 years to make - this our Apehood! I mean, this is it! For me, the relationships, all of those things, over such a long period of time now with actors, but also seeing the characters grow, develop, and change, and go through different situations.