The Doctor: Don't blink. Don't even blink. Blink and you're dead. Don't turn your back. Don't look away. And don't blink.

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!

The Doctor: Doctor Song, you've got that face on again. River: What face? The Doctor: The "He's hot when he's clever" face. River: This is my normal face. The Doctor: Yes it is. River: Oh, shut up. The Doctor: Not a chance.

I always tend to favor the newer idea.

It’s been a long time since Sherlock Holmes jumped off that roof - it’s time to reveal the truth about what happened between him and the pavement.

It's a fez. I wear a fez now. Fezes are cool.

Madness is just what a genius looks like to a tiny mind.