I gave myself permission to care, because there are a lot of people in this world who are afraid of caring, or afraid of showing that they care because it's uncool. It's uncool to have passion. It's so much easier to lose when you've shown everyone how much you don't care if you win or lose. It's much harder to lose when you show that you care, but, you'll never win, unless you also stand to lose. Don't be afraid of your passion.

Make love, not war. Unless you’re Loki, in which case: do what you want.

It's like playing tennis, you play a different rally with different people. Every actor is different and the chemistry between actors is different.

Heath Ledger's performance in The Dark Knight quite simply changed the game. He raised the bar not just for actors in superhero films, but young actors everywhere; for me. His performance was dark, anarchic, dizzying, free, and totally, thrillingly, dangerous.

What le Carré is so good at is unpicking something very specific about Englishness. That is almost part of why I think he wrote the novel. You can feel le Carré's anger that someone who has had the benefits of an English education and an English upbringing is using that privilege to basically do the worst things imaginable. There is an anger in the book about that.

I am desperate to do a comedy now.

Joanna points her camera at a section of society unused to having cameras pointed at it. But I don't know about categorising them in terms of class; I'm a bit wary of that. My dad is the son of a shipbuilder.