The Doctor: I don’t know! See that’s the thing. I’m the Doctor. But beyond that I just don’t know. I literally do not know who I am. It’s all untested. Am I funny? Am I sarcastic? Sexy? Right old misery? Life and soul? Right-handed, left-handed? A gambler, a fighter, a coward, a traitor, a liar, a nervous wreck? I mean judging by the evidence I’ve certainly got a gob.. And how am I going to react when I see this? A great big threatening button. A great big threatening button which must not be pressed under any circumstances, am I right? Let me guess. It’s some sort of control matrix, hm? Hold on, what’s feeding it? And what have we got here? Blood? Yep, definitely blood. Human blood. A positive. With just a dash of iron. But that means… blood control! Blood control! Aw! I haven’t seen blood control for years! You’re controlling all the A positives. Which leaves us with a great big stinking problem. Because I really don’t know who I am. I don’t know when to stop. So if I see a great big threatening button which should never ever ever be pressed, I just want to do this—
