- Phil Bradley: The first rocket I built rose three feet into the ground. The second took off horizontally, went straight through a hen-house and killed 40 roosters.
- Bradley's Interviewer: How very discouraging for you. What did you do after that?
- Phil Bradley: Buried the roosters, sir.
- [Curtis is about to make a parachute jump out of an aeroplane]
- Lt. John Curtis: If you're chute doesn't open, change it for a harp!
- [Curtis jumps]
- Robert Henshaw: [shouting after Curtis] I'm not musical.
- [Henshaw jumps]
- Duncan Sandys: In war, decisions almost always have to be taken on incomplete knowledge. If you wait until you're certain, you're sure to be too late.
- Lt. John Curtis: You don't know?
- Gen. Boyd: No.
- Lt. John Curtis: What do you call this mission? Operation Question Mark?
- German Hotel Porter: Please don't open the curtains.
- Robert Henshaw: You get air raids here?
- German Hotel Porter: I'll say! The Americans by day, the British by night.
- Duncan Sandys: We'll never win the war unless we are prepared to take risks, sometimes, great risks.
- Gen. Linz: London soon will stagger under the impact of 20,000 flying bombs. And that's just the beginning. The rocket, gentlemen - let's have the rocket now. And we can send every other weapon to the scrap heap! With the rocket in our hands, we will fulfill our historic mission: To be masters of the entire world!
- Gen. Boyd: Henshaw's new identity papers are sown into the spine of this book.
- Phil Bradley: Really? I have the most awful habit of losing books.
- Gen. Boyd: Well, for God's sake don't lose *that* one. Now, here are your new papers. You're name is Engel. Dr. Engel. Traveling from Pilsen. Your background's a bit sketchy, I'm afraid. We haven't had a great deal of time.
- Phil Bradley: Supposing I'm questioned?
- Gen. Boyd: You'll just have to use your imagination.
- [points to Bradley's moustache]
- Gen. Boyd: You'll have to lose the handlebars too. Now, don't worry, you'll only be in Germany a couple of days.
- Phil Bradley: Greatly relieved to hear it, sir.
- Duncan Sandys: Channel observation posts report that flying objects, with "a tail on fire", are passing over Dover and heading towards London. Speed over 400 miles per hour.
- V1-Rocket Test Pilot: Before the war, I used to be a jockey. But to squeeze into this damn thing you've got to be no bigger than a midget!
- Lt. John Curtis: You really don't have any choice. You may as well trust me.
- Nora Van Ostamgen: [long pause] I trust you.
- Prof. Hoffer: We need men like you. These days, good engineers are scarcer than...
- Lt. John Curtis: than good coffee.
- Lt. John Curtis: They're testing a new one - long range.
- Phil Bradley: How long?
- Lt. John Curtis: They call it the New York rocket.
- Gen. Linz: Gentlemen, in just three minutes, the first V-2 rocket will be fired at London. And in less than five minutes, it will explode on target. In five minutes, gentlemen, a new chapter will begin in the history of mankind.
- Prime Minister Winston Churchill: [final lines] Let us start at once. Let us clear the rubble. Lay the bricks. And let us do so in the firm conviction that we are building for the future. That never again shall we have to embark upon such a conflict that we recently endured. I solemnly believe that the price of such a folly, would be far more than mankind could afford to pay.
- Dutch Barge Skipper: This is your way to the hotel. You vill show your papers and rooms like other engineers. The Gestapo will not suspect nothing.
- Lt. John Curtis: I don't like the double negative.
- Dutch Barge Skipper: Sorry, I do not understand the English too well.
- Lt. John Curtis: Glad to hear it.
- Gen. Boyd: If the Germans took a photographic record of all their foreign workers, they'd need a filing cabinet as big as Hitler's ego.
- Phil Bradley: I was almost looking forward to going to Brussels, sir. Thought I might even find a really decent bottle of claret.
- Nora Van Ostamgen: Do you have children?
- Lt. John Curtis: No.
- Nora Van Ostamgen: Are you married?
- Lt. John Curtis: No.
- Nora Van Ostamgen: Then, it's easy to play the hero.
- Nora Van Ostamgen: I want you to let me out of this room. How can I convince you? How could I - persuade you? Can you be bribed? With money? I haven't got any.
- Gen. Linz: The British must be shown conclusively what German energy and German ingenuity can achieve. The Führer has ordered the total destruction of London! And I - I won't let my Führer down.
- Prime Minister Winston Churchill: I've been reading your final report on Operation Crossbow. It was a vital task.
- Professor Frederick Lindemann: In my opinion, the whole thing is a wild goose chase.
- Duncan Sandys: Well, that remains to be seen.
- Professor Frederick Lindemann: As a scientist, I was taught to be sure of my facts.
- Duncan Sandys: In war, decisions almost always have to be taken on incomplete knowledge. If you wait until you're certain, you're sure to be late.
- Lt. John Curtis: How'd you get on?
- Phil Bradley: Sent back to the base. They said they'd let me know.
- Lt. John Curtis: What?
- Phil Bradley: They didn't say.
- Lt. John Curtis: Probably planning some new secret weapon. That reminds me, can I give you a ride in my cab?
- Phil Bradley: Well, thank you very much. If it's not out of your way. Boodles?
- Lt. John Curtis: Boodles? What's that?
- Phil Bradley: Club, old boy.