Tom Hagen: When I meet with Tattaglia's men, should I insist all their drug middlemen have clean records?
Don Corleone: Mention it, don't insist. But Barzini will know that without being told.
Tom Hagen: You mean Tattaglia...
Don Corleone: Tattaglia is a pimp. He never could have outfought Santino. But I didn't know until this day that it was Barzini all along.