Amy Pond: 'I thought... well, I started to think you were just a madman with a box.' The Doctor: 'Amy Pond, there's something you better understand about me, 'cause it's important and one day your life may depend on it. [He Smiles] I am definitely a madman with a box.

I can't see what's wrong about assuming intelligence in your audience and what's bad news about being rewarded for assuming that.

Every episode [in a TV series] is a challenge, and what's challenging in most episodes is the monster. You're always a heartbeat from the monster looking ridiculous. You really have to work so hard to make them not look like ridiculous when they turn up on the set.

As we all know, it is the proper duty of every British subject to come to the aid of the TARDIS.

An awful lot of storytelling isn't really about making people understand - it's about making people care.

I don't think, generally speaking, people become writers because they were the really good, really cool, attractive kid in class. I'll be honest. This is our revenge for people who were much better looking and more popular than us. I was a bit like that, I suppose.

When you're surrounded by friends and exes, there's a whole lot of stuff that starts crawling out. But however serious and traumatic those experiences may be to the participant, to the onlooker they're hilarious.