Tenth Doctor Month: Quote Of The Day #1

Sycorax Leader: Who exactly are you?
The Doctor: Well, that's the question.
Sycorax Leader: I demand to know who you are!
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. 

The Christmas Invasion (2005)