Directing made me realise what I do as an actor that's extraneous, it focuses your mind on story, story, story.

Any actor worth his salt has a responsibility to reinvent himself from part to part.

When I started Doctor Who Steven Moffat said, "That's it for the rest of your life." I'll be Doctor to a whole generation when they're 50.

As an actor I can sort of smell a duff note, that isn't full of that much conviction. My worst thing with directors is when I know more than them about the character.

I've always loved dinosaurs.

At university I had a big coloured scarf and people would often say, 'All right, Doctor Who?' And, I thought, I rather liked that notion.

Amy Pond, there's something you'd better understand about me 'cause it's important, and one day your life may depend on it: I am definitely a mad man with a box!