Steven wrote to me today, saying, 'Don't you feel like sticking your head out of the window and yelling, "I DON'T KNOW WHAT I'M DOING!!!"' Yes, absolutely. Solidarity. Fear is always the same. Different worries with different scripts, but the same baseline fear.

I hate the idea that I have to represent any particular section of society; I just write good telly, that's all.

Wilf: God bless the cactuses! The Doctor: That's cactI. Alien: And that's racist!

My God, that scene in Monster Inc. where the monsters realise that their entire world is founded on hurting children -look at that for a change! Two galumphing cartoon characters making a shattering realisation about their world and their role in sustaining it. A truly epic moment. It's stunning.

I dread the day I leave [Doctor Who], because then I'll have to go back to writing bedrooms and offices and pubs. And maybe a field, if I'm lucky.

There's nothing better than a party that turns into a death trap.

Cyber Leader: Daleks, be warned. You have declared war upon the Cybermen. Dalek Sec: This is not war - this is pest control! Cyber Leader: We have five million Cybermen. How many are you? Dalek Sec: Four. Cyber Leader: You would destroy the Cybermen with four Daleks? Dalek Sec: We would destroy the Cybermen with one Dalek! You superior in only one respect. Cyber Leader: What is that? Dalek Sec: You are better at dying.