“I distrust a close-mouthed man. He generally picks the wrong time to talk and says the wrong things. Talking's something you can't do judiciously, unless you keep in practice.”

Sydney Greenstreet - Kasper Gutman

“- Alberta Marlow: I'm not so obsessed with money as you seem to be. I can do without it.
- Rick Leland: You stick around with me and you'll get plenty of practice.”
Mary Astor - Alberta Marlow
Humphrey Bogart - Rick Leland

“The law must be engraved in our hearts and practiced every minute to the letter and spirit.”
Ronald Colman - Professor Michael Lightcap

“- Lt. Joe Rossi: These nights are killers, aren't they?
- Cadet Ezra Parker: Yeah, I lie in my bunk with my clothes on and try to sleep, but every time that engine slows, my heart speeds up. In time, I think I can train myself to have an iron nerve, like you have.”
Humphrey Bogart - Lt. Joe Rossi
Dick Hogan - Cadet Ezra Parker

“- Lt. Joe Rossi: Don't get me wrong, Ensign, I'm not objecting to their youth. I'm all for it.
- Ensign Wright: They've all been trained for this job.”

Humphrey Bogart - Lt. Joe Rossi
Kane Richmond - Ensign Wright