Frank Nitti: He was stupid. He was an animal. All he knew were guns, Tony. That's what put him on top and that's how he figured to stay on top. He was so busy pumping bullets in the guy across the street that he forgot something.The same thing Johnny Torrio forgot. That the guy you really gotta watch out for isn't across the street at all. He's the bum standing on the same ladder you are. Right behind you.