Sam Spade: Haven't you tried to buy my loyalty with money and nothing else?
Brigid O'Shaughnessy: What else is there I can buy you with?

Sam Spade: If you kill me, how are you going get the bird? And if I know you can't afford to kill me, how are you going to scare me into giving it to you?
Kasper Gutman: Well, sir, there are other means of persuasion besides killing and threatening to kill.
Sam Spade: Yes, that's... That's true. But, there're none of them any good unless the threat of death is behind them. You see what I mean? If you start something, I'll make it a matter of your having to kill me or call it off.
Kasper Gutman: That's an attitude, sir, that calls for the most delicate judgment on both sides. Because, as you know, sir, in the heat of action men are likely to forget where their best interests lie and let their emotions carry them away.
Sam Spade: Then the trick from my angle is to make my play strong enough to tie you up, but not make you mad enough to bump me off against your better judgment.
Kasper Gutman: By gad, sir, you are a character.

Sam Spade: Ten thousand? We were talking about a lot more money than this.
Kasper Gutman: Yes, sir, we were, but this is genuine coin of the realm. With a dollar of this, you can buy ten dollars of talk.

Effie Perine: Look at me, Sam. You worry me. You always think you know what you're doing, but you're too slick for your own good. Some day you're going to find it out.

Joel Cairo: I am prepared to pay five thousand dollars for the figure's return. Do you have it?
Sam Spade: No.
Joel Cairo: But if it isn't here, why did you risk serious injury to prevent my searching for it?
Sam Spade: Why should I sit around here and let people come in and stick me up?
Joel Cairo: But certainly it is only natural that I try to save the owner such a considerable expense if possible.

Joel Cairo: Look what you did to my shirt.

Joel Cairo: Might I remind you Mr. Spade that you may have the falcon, but we certainly have you.

Joel Cairo: You... you bungled it. You and your stupid attempt to buy it. Kemedov found out how valuable it was, no wonder we had such an easy time stealing it. You... you imbecile. You bloated idiot. You stupid fat-head you.
[cries]

Detective Tom Polhaus: [picks up the falcon] Heavy. What is it?
Sam Spade: The, uh, stuff that dreams are made of.
Detective Tom Polhaus: Huh?

Kasper Gutman: By Gad, sir, you are a character. There's never any telling what you'll say or do next, except that it's bound to be something astonishing.