Willy Wonka: Charlie, don't forget what happened to the man who suddenly got everything he always wanted.
Charlie Bucket: What happened?
Willy Wonka: He lived happily ever after.
Mr. Salt: What is this, Wonka? Some kind of fun house?
Willy Wonka: Why? Having fun?
Willy Wonka: So much time and so little to do. Wait a minute. Strike that. Reverse it.
Willy Wonka: A little nonsense now and then is relished by the wisest men.
Willy Wonka: Invention, my dear friends, it's 93% perspiration, 6% electricity, 4% evaporation, and 2% butterscotch ripple.
Mrs. Teevee: That's 105 percent.
Willy Wonka: How did you like the chocolate factory, Charlie?
Charlie Bucket: I think it's the most wonderful place in the whole world!
Willy Wonka: I'm very pleased to hear you say that, because I'm giving it to you.
Willy Wonka: No, no, don't speak. For some moments in life there are no words.
Willy Wonka: Finito!
Veruca Salt: That's all?
Willy Wonka: That's all? Don't you know what this is?
Violet Beauregarde: By gum, it's gum.
Willy Wonka: Wrong! It's the most amazing, fabulous, sensational gum in the whole world!
Violet Beauregarde: What's so fab about it?
Willy Wonka: This little piece of gum is a three-course dinner.
Mr. Salt: Bull.
Willy Wonka: No, roast beef, but I haven't got it quite right yet.
Willy Wonka: The suspense is terrible... I hope it'll last.
[Augustus has fallen into the chocolate river.]
Mrs. Gloop: Do something!
Willy Wonka: Help. Police. Murder.
Mrs. Teevee: I assume there's an accident indemnity clause.
Willy Wonka: Never between friends.
Mike Teevee: Wait till I get a real one. Colt 45. Pop won't let me have one yet, will ya, Pop?
Mr. Teevee: Not till you're 12, son.
Charlie Bucket: Mr. Wonka, they won't really be burned in the furnace, will they?
Willy Wonka: Well, I think that furnace is only lit every other day, so they have a good sporting chance, haven't they?
Willy Wonka: I don't understand it. The children are disappearing like rabbits. Well, we still have each other. Shall we press on?
Augustus Gloop: Let me in, I'm starving!
Willy Wonka: Now, don't get excited. Don't lose your head, Augustus. We don't want anybody to lose that. Yet.
Willy Wonka: The strawberries taste like strawberries, and the snozzberries taste like snozzberries.
Veruca Salt: Snozzberries? Who ever heard of a snozzberry?
Augustus Gloop: I feel very sorry for Wonka. It's gonna cost him a fortune in fudge.
Mr. Salt: Wonka, how much do you want for the golden goose?
Willy Wonka: They're not for sale.
Mr. Salt: Name your price.
Willy Wonka: She can't have one.
Veruca Salt: Who says I can't?
Mr. Salt: The man with the funny hat.
Sam Beauregarde: I'm getting even with you for this, Wonka, if it's the last thing I ever do! I've got a blueberry for a daughter.
Answer: Closed circuit security was invented in 1942 and came into common use in the late 60s and early 70s. Beyond that, Wonka could have had Oompa Loompas monitoring the group or simply noticed that they were gone and guessed.
Greg Dwyer