Shakespeare: (to Martha, about the Doctor) You look at him like you're surprised he exists. He's as much of a puzzle to you as he is to me.
Martha: I think we should say goodnight.
Shakespeare: I must work. I have a play to complete. Will I get my answers tomorrow, Doctor? And I'll discover more about you and why this constant performance of yours.
The Doctor: All the world's a stage.
Shakespeare: Hmm. I might use that.