- Dr. John Marlowe: [when Lisa offers to let him stay overnight in her room] What will your sisters think?
- Lisa Robinson: They are not my sisters; and they have nothing to think with.
- Dr. John Marlowe: They tell me that in some parts of the world musicians are finding it increasingly difficult to compose non-political music, so it's very gratifying to think that a doctor can still perform a non-political operation.
- Lisa Robinson: [Lisa settling down after hearing Marlowe's story, believing he is Karl Theodor and letting him sleep on the sofa] If you don't mind I will go to sleep now
- Dr. John Marlowe: Me too, I think I will sleep well tonight
- Lisa Robinson: I'm sure you will, I put two sleeping tablets in your cocoa
- [Marlowe looks surprised]
- Lisa Robinson: Well Mr Theodor there are risks and risks, and I'm not taking that one !
- Karl Theodor: [Lisa hurriedly packing a case, Theodor pacing up and down]
- [Lisa folding a pair of pajamas]
- Karl Theodor: You have excellent taste
- Lisa Robinson: Do you mind ! It will take me longer if I stop to shudder.
- Dr. John Marlowe: What will happen now?
- Colonel Galcon: Anything. At the moment I don't know whether I'm a crypto-fascist, a liberal humanitarian or a simple deviationist. It depends whether I still control tomorrow's newspaper.
- Dr. John Marlowe: We are prepared to strike a bargain.
- Lisa Robinson: Do you understand?
- Karl Theodor: Oh, blackmail?
- Dr. John Marlowe: If you like.
- Karl Theodor: Why couldn't you have said so? You had me worried for a moment. How much?
- Dr. John Marlowe: It's not a question of money.
- Karl Theodor: Oh please, please. Don't tell me it's the principle of the thing. That always turns out to be so much more expensive.