First there were the Daleks...And then there was a man who fought them. And then, in time — he died. There are a few, of course, who believe that thi… - Steven Moffat

I'm not a psychopath, Anderson, I'm a high-functioning sociopath. Do your research.

We've kind of got to tell a lie. We'll go back into history and there will be black people where, historically, there wouldn't have been, and we won't dwell on that. We'll say, 'To hell with it, this is the imaginary, better version of the world. By believing in it, we'll summon it forth'.

When you run with the Doctor, it feels like it'll never end. But however hard you try you can't run forever. Everybody knows that everybody dies and nobody knows it like the Doctor. But I do think that all the skies of all the worlds might just turn dark if he ever, for one moment, accepts it.