The Doctor: So you're just about an expert in everything, except the things in your museum. Anything you don't understand, you lock up.
Henry Van Statten: And you claim greater knowledge?
The Doctor: I don't need to make claims. I know how good I am.
Henry Van Statten: And yet I captured you. Right next to the Cage. What were you doing down there?
The Doctor: You tell me.
Henry Van Statten: The Cage contains my one living specimen.
The Doctor: And what's that?
Henry Van Statten: Like you don't know.
The Doctor: Show me.
Henry Van Statten: You wanna see it?
Rose: Blimey, you can smell the testosterone.