Peter Capaldi, will always be Doctor Who. You retain the title forever. Ask your predecessors, they all think they're the real one. I've had Sunday lunch with Peter Davidson and David Tennant and they're eyeing each other like, 'It's me!

You'll go out of business if you think people are stupid.

There's something really cool about scaring children. Traumatize a generation, that's what it's all about.

Sarah Jane Smith was everybody's hero when I was younger, and as brave and funny and brilliant as people only ever are in stories. But many years later, when I met the real Sarah Jane - Lis Sladen herself - she was exactly as any child ever have wanted her to be. Kind and gentle and clever; and a ferociously talented actress, of course, but in that perfectly English unassuming way.

Amy: I never knew you drank wine. Doctor: I'm 1103 I must have drunk it sometime in my life. *takes sip and spits it out in disgust*

You could only draw conclusions about my personal sexual politics if you proceed from the assumption that I was presenting the characters as the way it is and the way it ought to be. But both are clearly defined as deranged – it’s love among the mad. He’s a psycopath, so is she. She’s prepared to throw him to the dogs until he works out the code, he’s prepared to let her nearly get executed. They’re not really going to buy a house and a Volvo together. I’m not saying this is how people should date!

Hitler: Thank you, whoever you are. I think you just saved my life. The Doctor: Believe me... It was an accident.