“Brigid O'Shaughnessy: “I haven't lived a good life. I've been bad, worse than you could know.” Sam Spade “You know, that's good, because if you actually were as innocent as you pretend to be, we'd never get anywhere”

“I hope they don't hang you, precious, by that sweet neck. Yes, angel, I'm gonna send you over. The chances are you'll get off with life. That means if you're a good girl, you'll be out in 20 years. I'll be waiting for you. If they hang you, I'll always remember you. (Sam Spade to Brigid O'Shaughnessy)”

“The hell of it, Miss- Is your name Wonderly or Leblanc?' She blushed and murmured: 'It's really O'Shaughnessy - Brigid O'Shaughnessy”

“To swipe the immortal lines uttered by Sam Spade in The Maltese Falcon, a great mystery should take "the lid off life and let [you] look at the works.”

“When a man's partner is killed he's supposed to do something about it. It doesn't make any difference what you thought of him. He was your partner and you're supposed to do something about it. Then it happens we were in the detective business. Well, when one of your organization gets killed it's bad business to let the killer get away with it. It's bad all around-bad for that one organization, bad for every detective everywhere. Sam Spade”

“Now I pass up about twenty-five or thirty thousand of honest gain because I like being a detective, like the work. And liking work makes you want to do it as well as you can. Otherwise there’d be no sense to it. That’s the fix I am in. I don’t know anything else, don’t enjoy anything else, don’t want to know or enjoy anything else. You can’t weight that against any sum of money. Money’s good stuff. I haven’t anything against it.”

“You're drunk, and I'm drunk, and I'm just exactly drunk enough to tell you anything you want to know. That's the kind of girl I am. If I like a person, I'll tell them anything they want to know. Just ask me. Go ahead, ask me.”