I think instinct is your most powerful tool that you have as an actor. Nothing must be predetermined. So therefore, you mustn't have a plan about how… - Cillian Murphy

Well, first of all, it's imperative not to judge the character. Because then you've lost as a performer. You have to try and understand [them]. You have to be like a kind of emotional detective. But your job primarily is to define the truth in the character to try and portray them in a truthful way.

You find so much empathy in novels, you know, because there you are putting yourself into somebody else's point of view, and I've always been a big reader. When a movie can connect with someone, and they feel seen or feel heard, or a novel can change somebody's life, or a piece of music-- an album-- can change someone's life. And I've had all that happen to me. And that's the power of good art, I think.

The majority of my buddies are not in the business. I also love not working. And I think for me a lot of research as an actor is just fucking living, and, you know, having a normal life doing regular things and just being able to observe, and be, in that sort of lovely flow of humanity. If you can’t do that because you’re going from film festival to movie set to promotions…I mean that’s The Bubble. I’m not saying that makes you any better or less as an actor, but it’s just a world that I couldn’t exist in. I find it would be very limiting on what you can experience as a human being, you know?