When you're playing a real person there's a balance between playing the person in the script and playing the person as he was in life. You have to be respectful and true to who that person was, but at the same time tell the story in the film.

I love characters who are clever and smart, and you have to run to catch up with. I think there's something very appealing and rather heroic in that.

I'm quite happy to leave it still feeling that way, leave it before it starts feeling like a job. ... I have such fond memories of watching 'Doctor Who' when I was a kid and growing up, that if I've left anybody anywhere with memories as fond, then I feel like I've done my job.

I think it would be self-indulgent to go, "Oh, I'm going to make this character different by giving him a quirk of some kind." I don't think that serves the story, particularly. But even very similar scenes with a different set of actors, a different set of circumstances, it starts to evolve as a different character.

I still am a geek, I don't think there's anything wrong with it. I see no shame in having an unhealthy obsession with something.

It's very hard to be objective about something you're in, especially when you set it up against things that you experienced as a child.

We seem to spend a lot of our time in very small spaces spouting a lot of dialogue very quickly.