Dashiell Hammett

"The cheaper the crook, the gaudier the patter."

"I didn't know then, and I don't know now, whether she was the owner of the world's best poker face or was just naturally stupid, but whichever she was, she was thoroughly and completely it."

"Remember, I've got no idea what this is all about," said the girl when they were in the living room, a narrow room, where blue fought with red without ever compromising on purple."

"Emotions are useless during business hours."

"You’re a damn good man, sister," he said and went out."

"His features were small, in keeping with his stature, and regular. His skin was very fair. The whiteness of his cheeks was as little blurred by any considerable growth of beard as by the glow of blood…"

"That’s why I don’t very often drink, or even smoke. I want to try cocaine, though because that’s suppose to sharpen the brain, isn’t it?"

"I don't like eloquence. If it isn't effective enough to pierce your hide, it's tiresome, and if it is effective enough, it muddles your thoughts."