This one kills only animals.
5 seconds sound clip from the Dune (1984) movie soundboard.
You can hear this line at 00:37:55 in the Blu-ray version of the movie.
Quote context
[...]
- Put your right hand in the box.
- Pain.
- Stop.
- I hold at your neck the gom jabbar. Don't pull away or you'll feel the poison.
- A duke's son must know about many poisons.
- This one kills only animals.
- Are you suggesting a Duke's son is an animal?
- Let us say, I suggest you may be human.
- Your awareness may be powerful enough to control your instincts.
- Your instinct will be to remove your hand from the box.
[...]