Curiosity probably didn't kill anyone with a reasonable sense of self-preservation

Doctor Who:
"There's something that doesn't make sense.  Let's go poke it with a stick."

"That's so human.  Where angels fear to tread."

"standing on the edge...That impulse...That strange little impulse...That mad little voice saying, 'Go on! Go on!... Go over! Go on!...' Maybe it's relying on that."

Kurt Vonnegut:
"I want to stay as close to the edge as I can without going over.  Out on the edge you see all kinds of things you can't see from the center."