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

“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”

“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”

“When you write, you want fame, fortune and personal satisfaction. You want to write what you want to write and feel it's good, and you want this to go on for hundreds of years. You're not likely ever to get all these things, and you're not likely to give up writing and commit suicide if you don't, but that is -- and should be -- your goal. Anything else is kind of piddling.”

“The problem with putting two and two together is that sometimes you get four, and sometimes you get twenty-two.”

“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)”