No way would the Duke forego the art of Kanly, as vendetta was known.
6 seconds sound clip from the Dune (1984) movie soundboard.
You can hear this line at 00:43:04 in the Blu-ray version of the movie.
Quote context
[...]
- But he's not. And he won't die. Tell me he won't die.
- What can be done has been done.
- The Baron Harkonnen sent Duke Leto a gesture of peace.
- No way would the Duke forego the art of Kanly, as vendetta was known.
- This then, is the Duke's response as he sat writing at his desk:
- Your offer of a meeting is refused.
- I have ofttimes met your treachery, and this all men know.
- The art of Kanly still has its admirers in the empire.
- Then he signed it Duke Leto of Arrakis knowing full well that this would annoy the Baron.
[...]