I feel like I'm away for much of my own life.

There's a huge amount of footage of Julian [ Assange] online, but he's usually in presentation or defending mode, talking about his cause, or the revelations which Wikileaks have brought about. There's none of Assange relaxing or in private mode. There's none of the personality I tried to give him behind closed doors [in The Fifth Estate ].

There's a heroic amount of effort that goes into making him [Doctor Strange] a superhero by the end of the film.

Sometimes during a conversation with a journalist - where you are answering things you never normally talk about, not even with some of your closest friends - you end up being quite confessional, and you don't think about the amplification of that. No matter how fancy these journalists are, they have editors or political leanings behind their publications, which means that, basically, they're going to shape what you've said into an article they've already written. So you have to be really careful with your words.

Doctor Strange is selfish but he's still saving lives.

Even though my parents experiences were different from mine. I wasn't a child actor brat; I didn't travel with them in the circuit. But I got a look into their world, so I did know what I was getting into, to an extent. And they are a constant source of grounding.

I realised quite early on that, although I wasn't trying to make a career speciality of it, I was playing slightly asexual, sociopathic intellectuals.