Russian: You know, I had a boy like you once. He was as ugly as dirt... took after his ma. I ended up having to slit his throat.
Frank Nitti: He was stupid. He was an animal. All he knew were guns, Tony. That's what put him on top and that's how he figured to stay on top. He was so busy pumping bullets in the guy across the street that he forgot something.The same thing Johnny Torrio forgot. That the guy you really gotta watch out for isn't across the street at all. He's the bum standing on the same ladder you are. Right behind you.
McMurphy: What do you think you are, for Chrissake, crazy or somethin'? Well you're not! You're not! You're no crazier than the average asshole out walkin' around on the streets, and that's it.
Store Clerk: Well, sir, a covered wagon pulling outta St. Joe didn't take near as much supplies as you got yourself here, Mr. O'Day.
Jason O'Day: You're sure one well-informed man, aren't ya? Now, did you think you can hand me that carton without straining yourself, or are you just tuckered out from sticking your nose in my affairs?
Jenny Hill: I'm not proud of what I did.
Sigerson Holmes: You've just told me a magnificent success story! Overlooking the fact that you're a liar, a thief, a traitor, and a whore, I don't see what should be bothering you.
Harold: Is it true that with your new mechanical arm you can shift gears in less than a twentieth of a second? Would you care to comment on that?
Frankenstein: No.
Harold: How do you feel about going into the race with a navigator you've never met?
Grace Pander: You'll love Annie. She's a red-hot sexpot.
Frankenstein: She'd better be a red-hot navigator.
Lady Pearl: All I remember, the next few days was us just lookin' at that TV set and seein' that great fat-bellied sheriff sayin' 'Ruby, you son of a bitch.' And Oswald. And her in her little pink suit.
Felicia: Oh god, Lester you are a miserable human being. You're not helping anybody! You're just twisting arms here for a lot of silly sons of bitches who are all out for themselves. You're kidding yourself if you think your new business partner is going to keep his hands off your girl. Or if she's going to keep her hands off him.