Professor, as you know, I'm a man of principle. And man and boy, my guiding principle has always been a bet's a bet.
9 seconds sound clip from the Blackbeard's Ghost (1968) movie soundboard.
You can hear this line at 01:05:37 in the Blu-ray version of the movie.
Quote context
[...]
- Mr Seymour, may I speak with you for a moment, please?
- Why, certainly, Professor, anytime. Run along, fellas. Now, Professor, what can I do for you?
- Say, now. So the bet was all your doing, huh?
- Well, I... I was wondering if you would be kind enough to cancel the bet and give us back the money?
- But look at those poor old ladies. What's gonna happen to them? You know they have nowhere to go.
- Now, do they know about this?
- Of course not. I wouldn't dare raise false hopes.
- Then you won't give it back?
- Sweetness, what do you take me for?
[...]