Alan Turing: Do you know why people like violence? It is because it feels good. Humans find violence deeply satisfying. But remove the satisfaction, and the act becomes... hollow.
Alan Turing: When people talk to each other, they never say what they mean.
[pause]
Alan Turing: They say something else and you're expected to just know what they mean.
Final quotes: His machine was never perfected, though it generated a whole field of research into what became known as "Turing Machines". Today we call them "computers".
Joan Clarke: I know it's not ordinary. But who ever loved ordinary?
Alan Turing: I like solving problems, Commander. And Enigma is the most difficult problem in the world.
Commander Denniston: Enigma isn't difficult, it's impossible. The Americans, the Russians, the French, the Germans, everyone thinks Enigma is unbreakable.
Alan Turing: Good. Let me try and we'll know for sure, won't we?
Stewart Menzies: [candidates are taking a timed test] Six minutes... is that even possible?
Alan Turing: No, it takes me eight.
Joan Clarke: [raises her hand]
Alan Turing: You're finished?... Five minutes thirty four seconds.
Joan Clarke: You said to finish under six minutes.
Alan Turing: Was I God? No. Because God didn't win the war. We did.
Alan Turing: Hardest time to lie to somebody is when they're expecting to be lied to.
Hugh Alexander: If you run the wires across the plugboard matrix diagonally, you'll eliminate rotor positions 500 times faster.
Alan Turing: This is actually not an entirely terrible idea.
Joan Clarke: That's Alan for "thank you."
Alan Turing: Advice about keeping secrets: it's a lot easier if you don't know them in the first place.
Alan Turing: Even a broken clock is right twice a day.
Alan Turing: [after telling the story] Now you decide: Am I a machine? Am I a human? Am I a war hero? Or am I a criminal?
Detective Robert Nock: I can't judge you.
Alan Turing: Well, then. You were of no help to me at all.
Alan Turing: Uh, that's my sandwich.
Hugh Alexander: You don't like sandwiches.
