- Igor Gouzenko: I'm a very important person, with all kinds of important secrets. Listen, and I will tell you one... my wife is very beautiful.
- Nina Karanova: More beautiful than I?
- Igor Gouzenko: Hers is a quiet kind of beauty, soft and warm.
- Nina Karanova: And mine?
- Igor Gouzenko: Your beauty is a thing carved out of granite, with no body or soul.
- Igor Gouzenko: I've got some news for you.
- Maj. Semyon Kulin: News, news, news. The world of full of news these days.
- Igor Gouzenko: Oh, this is something I...
- Maj. Semyon Kulin: Don't get excited about it. That's very important. And don't get believe everything you hear.
- Igor Gouzenko: This just came from Moscow.
- Maj. Semyon Kulin: Ah, then you must believe it, every word of it.
- Igor Gouzenko: Listen, Comrade Major. Our wives are arriving, day after tomorrow.
- Maj. Semyon Kulin: Oh, no! What time?
- Igor Gouzenko: Eleven thirty.
- Maj. Semyon Kulin: If we're lucky, the train will be late, very late.
- Igor Gouzenko: Comrade Major, my wife will be on that train.
- Maj. Semyon Kulin: Your wife was never a captain in the Red Army!
- Col. Ilya Ranov: There must be no misconception about our relations with our former capitalist allies. Our interests can never coincide. Our rules and aims are quite different. We have no place for bourgeois sentimentalism, only relentless realism. The class struggle will continue, until this decadent, plutocratic democracy is as completely destroyed as National Socialism. Therefore, you, the representatives of the Soviet Union in Canada, will as always remain vigilant, suspicious, and aloof. That will be all.
- John Grubb, aka 'Paul': [to Lietz, when he is accused of treason] You've got to use every parliamentary trick at you know. You've got to stir up the front organizations, the sympathetic newspapers and periodicals. Start them howling about forgeries, about witch hunts, about violations of democratic rights.
- Col. Aleksandr Trigorin: That fantastic mushroom over Hiroshima. I saw the newsreel pictures. I can't get them out of my head.
- Maj. Semyon Kulin: A beautiful, poisonous mushroom.
- Maj. Semyon Kulin: As a man, I'm called a sadist, but what of governments that pile dead upon dead and justify murder as a means to an end?
- Maj. Semyon Kulin: An efficient firing squad will solve all my problems. Takes too long to drink oneself to death.
- John Grubb, aka 'Paul': Don't be too unhappy, Leitz. We'll name a city after you, when we take over.