"[whispers to himself as he points his rifle at an Iraqi boy carrying an RPG launcher] Don't pick it up... [pause] Drop it! [his finger starts trembling on the trigger. The boy eventually drops the RPG and he sighs in relief]"

"God, country, family, right?"

"Progress — not Perfection."

"Sometimes it’s the people no one imagines anything of who do the things that no one can imagine."

"The true enigma was the man who cracked the code."

"Unlock the secret. Win the war."

"You do not know this man. Yet he has changed our lives."

"A top-secret life."

"Behind every code is an enigma."

"Steven Waddington - Supt Smith"

"James Northcote - Jack Good"

"Tuppence Middleton - Helen"

"David Charkham - William Kemp Lowther Clarke"

"Victoria Wicks - Dorothy Clarke"

"Jack Bannon - Christopher Morcom"

"Alex Lawther - Young Turing"

"Rory Kinnear - Detective Robert Nock"

"Matthew Beard - Peter Hilton"

"Allen Leech - John Cairncross"

"Charles Dance - Cdr. Alastair Denniston"

"Mark Strong - Maj. Gen. Stewart Menzies"

"Matthew Goode - Hugh Alexander"

"Keira Knightley - Joan Clarke"

"Benedict Cumberbatch - Alan Turing"

"End titles: 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" (Above quote corrected): Historians estimate that breaking enigma shortened the war by more than two years saving over 14 million lives. It remained a government-held secret for more than 50 years. Turing's work inspired generations of research into what scientists called "TURING MACHINES," Today we call them computers."

"Stewart Menzies: Oh, Alan... we're gonna have such a wonderful war together."

"Alastair Denniston: Double agents are such bastards. Isolated loners. No attachments to friends or family. Arrogant. Know anybody like that?"

"Christopher Morcom: Sometimes it is the people no one imagines anything of who do the things no one can imagine."

"Headmaster: [to a young Alan, about his note-passing] You and your friend solve maths problems during maths class because the maths class is too dull?"

"I know it's not ordinary. But who ever loved ordinary?"

"No one normal could have done that. Do you know, this morning... I was on a train that went through a city that wouldn't exist if it wasn't for you. I bought a ticket from a man who would likely be dead if it wasn't for you. I read up on my work... a whole field of scientific inquiry that only exists because of you. Now, if you wish you could have been normal... I can promise you I do not. The world is an infinitely better place precisely because you weren't."

"Heil Hitler. Turns out that's the only German you need to know to break Enigma."

"Sometimes it is the people no one imagines anything of who do the things no one can imagine."

"Of course machines can't think as people do. A machine is different from a person. Hence, they think differently. The interesting question is, just because something thinks differently from you, does that mean it's not thinking?"

"Think of it. A digital computer. Electrical brain."

"Was I God? No. Because God didn't win the war. We did."

"When people talk to each other, they never say what they mean. They say something else and you're expected to just know what they mean."