Let that be an object lesson in the dangers of tampering with the laws of Mother Nature.
9 seconds sound clip from the Batman (1966) movie soundboard.
You can hear this line at 01:09:25 in the Blu-ray version of the movie.
Quote context
[...]
- Which naturally left them in a highly unstable condition!
- The slightest impact was sufficient to instantly reduce them to antimatter.
- Antimatter? You mean they... won't be coming back?
- No, Robin. Not in this universe.
- Let that be an object lesson in the dangers of tampering with the laws of Mother Nature.
- My apologies, Commodore Schmidlapp.
- It's clear that I've done you a cruel injustice.
- You were duped, brainwashed.
[...]