It's awfully easy to be in love in jail
Joel Cairo: You always have a very smooth explanation ready. Sam Spade: What do you want me to do, learn to stutter?
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.
Nora: "How do you feel?" Nick: "Terrible. I must've gone to bed sober.
You don't pay a prostitute for sex, you pay her to leave afterwards.
I've been as bad an influence on American literature as anyone I can think of.