"My guess might be excellent or it might be crummy, but Mrs. Spade didn't raise any children dippy enough to make guesses in front of a district attorney, and an assistant district attorney, and a stenographer."

"Barton MacLane - Det. Lt. Dundy"

"Peter Lorre - Joel Cairo"

"We didn't exactly believe your story, Miss O'Shaughnessy; we believed your two hundred dollars...I mean, you paid us more than if you'd been telling us the truth, and enough more to make it all right."

"Gladys George - Iva Archer"

"Mary Astor - Brigid O'Shaughnessy"

"Humphrey Bogart - Sam Spade"

"He's a Killer When He Hates!"

"He's as fast on the draw as he is in the drawing room!"

"A guy without a conscience! A dame without a heart!"

"A story as explosive as his blazing automatics!"

"I haven’t lived a good life—I’ve been bad."

"I’ve always been a liar."

"[to Kasper Gutman] You! It’s you who bungled it! You and your stupid attempt to buy it! You ... you imbecile! You bloated idiot! You stupid fat-head, you!"

"Fake! It’s a phony! It—it’s lead! It’s lead! It’s a fake!"

"Well, Wilmer, I'm sorry indeed to lose you, but I want you to know I couldn't be fonder of you if you were my own son. Well, if you lose a son, it's possible to get another. There's only one Maltese falcon. When you're young, you simply don't understand these things."

"[to Brigid O'Shaughnessy] You won’t need much of anybody’s help. You’re good. It’s chiefly your eyes, I think, and that throb you get in your voice when you say things like ‘Be generous, Mr. Spade.’"

"[to Brigid O'Shaughnessy] You’re good. You’re very good."

"[to Brigid O'Shaughnessy] This isn’t the spot for the school girl act. The pair of us are sitting under the gallows."

"[to Brigid O'Shaughnessy] Miles hadn't many brains, but he had too many years of experience as a detective to be caught like that, by a man he was shadowing, up a blind alley with his gun tucked away in his hip and his overcoat buttoned. [Long pause, then, slowly] But he would have gone up there with you, Angel. He was just dumb enough for that. He'd have looked you up and down and licked his lips and gone, grinning from ear to ear."

"[to Effie Perine] You're a good man, sister."

"[to Cairo] When you're slapped, you'll take it and like it."

"Elisha Cook Jr. - Wilmer Cook"

"Jerome Cowan - Miles Archer"

"Ward Bond - Det. Tom Polhaus"

"Sydney Greenstreet - Kasper Gutman"

"Lee Patrick - Effie Perine"

"Russians. Anti-semite cossack sluts."

"Mike Reid – Doug "the Head" Denovitz"

"Benicio Del Toro – Franky Four Fingers"

"Vinnie Jones – Bullet Tooth Tony"

"Lennie James – Sol"

"Robbie Gee – Vincent"

"Rade Serbedzija – Boris "the Blade" Yurinov (as Rade Serbedgia)"

"Dennis Farina – Abraham "Cousin Avi" Denovitz"

"Brad Pitt – Mickey O'Neil"

"Alan Ford – Brick Top Polford"

"Stephen Graham – Tommy"

"Jason Statham – Turkish"

"Stealing stones is hazardous."

"Now you see it, now you don't!"

"Stealin' Stones and Breakin' Bones"

"Various characters: [regarding Boris the Blade] Sneaky fuckin' Russian"

"Sol: [Vinny tries to open the outer door at the bookies] It won't open because it's a security door!"

"Franky Four Fingers: So the Biblical scholars mistranslated the Hebrew word for "young woman" into the Greek word for "virgin". It was an easy mistake to make, since there is only a subtle difference in the spelling. But it was the "virgin" that caught people's attention. It's not every day a virgin conceives and bears a son. So you keep that for a couple of hundred years, and the next thing you know, you have the Holy Catholic Church. Oy vey."

"Chinese Victim of Bullet Tooth Tony: [after shooting Tony several times without him dying] I shoot you, you go down!"