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.


--Sydney Greenstreet (as Kasper Gutman) in The Maltese Falcon

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.


--Sydney Greenstreet (as Kasper Gutman) in The Maltese Falcon

Alexander Yardley: What a Christmas! Ho, ho, what a Christmas!


--Sydney Greenstreet (as Alexander Yardley) in Christmas in Connecticut

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.


--Sydney Greenstreet (as Kasper Gutman) in The Maltese Falcon

Kasper Gutman: Here's to plain speaking and clear understanding.


--Sydney Greenstreet (as Kasper Gutman) in The Maltese Falcon

Kasper Gutman: I couldn't be fonder of you if you were my own son. But, well, if you lose a son, it's possible to get another. There's only one Maltese Falcon.


--Sydney Greenstreet (as Kasper Gutman) in The Maltese Falcon

Kasper Gutman: I distrust a man who says "when." If he's got to be careful not to drink too much, it's because he's not to be trusted when he does.


--Sydney Greenstreet (as Kasper Gutman) in The Maltese Falcon

Kasper Gutman: That's an attitude, sir, that calls for the most delicate judgment on both sides. 'Cause 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.


--Sydney Greenstreet (as Kasper Gutman) in The Maltese Falcon

Kasper Gutman: The best goodbyes are short. Adieu.


--Sydney Greenstreet (as Kasper Gutman) in The Maltese Falcon

Kasper Gutman: These are facts, historical facts, not schoolbook history, not Mr. Wells' history, but history nevertheless.


--Sydney Greenstreet (as Kasper Gutman) in The Maltese Falcon