- Mr. X: [as Hart is restrained on the operating table] I am just going to cut away your shirt. You don't mind? The pain when I am going through the layers of skin will not be unendurable. It is only when I am able to cut on the inside that you will realize you are having... an experience.
- [He cackles under his surgical mask]
- Mr. X: Wasn't it Nietzsche, who said that unendurable pain merges into ecstasy?
- Jim Henderson: [as Henderson goes into X's lab] Hello, Doc!
- Jim Henderson: [X turns the noisy machines off] How's the old throat specialist?
- Mr. X: It will be a pleasure, Henderson, to work on your throat... someday.
- Jim Henderson: [He laughs nervously] No, thank you, Doctor.
- Jack Hart aka Quinn: I'll guarantee this: no matter what happens to me, this butcher shop won't be here tomorrow.
- Mr. X: Neither will you.
- Jack Hart aka Quinn: [to Hawkes]
- [om how he escaped being tossed out of a plane by the bad guys]
- Jack Hart aka Quinn: You see, chief, I kinda felt I couldn't afford to drown just yet as I wanted to see a lot more of Miss Arnold.
- Arnold: Stay where you are. I'm aiming at your heart.
- Jack Hart aka Quinn: You'll have to aim higher, brother, because muh heart is in muh mouth.
- Arnold: [opening the door and finding Edwards eavesdropping] Edwards, if you prefer, I'll make stenographed notes of my phone conversations in the future. I'll save you the trouble of listening in.
- Nurse Edwards: That won't be necessary. I do as I'm told.
- Arnold: I'm sick of your spying. I've had it!
- Nurse Edwards: You know where my orders come from.