Curiosity Killed The Cat
Used as an veiled warning about the unnecessary investigation and dangers of being too curious. HOWEVER, the rejoinder expressed is subtly stated as
"But satisfaction brought the cat back...".
Interestingly, cats are thought to have at least 9 lives.
<<<<<<<~~ Schröedinger's is another fine example of the many aptitudes of the kitty cat.
Side notes: I would say this proverb is false. But it is nice to know we have a strong counter-culture of opinion in support of cats.