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

Witty and mean is easy - but fond and funny is hard.

Never knowingly be serious. Rule 27.

Always take a banana to a party.

I can say with pride verging on smugness that I've got two very successful shows that assume their audience is very smart.

The way you get your script to the right people is that you put it in an envelope. It's easy. The difficult bit is writing something that is so good people will take a punt on a brand new writer.

You know when sometimes you meet someone so beautiful — and then you actually talk with them, and five minutes later they're as dull as a brick. But then there's other people, and you meet them and you think: "Not bad, they're okay," and then you get to know them, and their face sort of becomes them, like their personality's written all over it; and they just — and they turn into something so beautiful.