It's a real luxury to be able to develop with your character.

When you read something that good, it's terrifying because you're thinking, "Oh, god, what if I don't get this?"

A lot of the time, because of the polar bears you're not allowed to go outside the door without your hunting rifle, even if it's to go to the local shop. The polar bears will come from nowhere, and you'll be eaten alive.

When you get out onto a glacier that's the size of Northern Ireland and it's so vast, and you're standing on top of it and you can see forever, it's so pure and clear that you can see for miles and miles and miles. You really do think, "Wow, there is a god!" You feel very humbled.

When you're working with really good actors, it raises your own game and you get better.

I was fascinated by the world. I thought, "I just want to be a part of this world."

Sometimes you even start to sound like the character, because you're living and breathing them every day on the set. It gets into your bones, it becomes a part of you.