Star Trek: The Next Generation (in the episode “Q Who?”) when the character “Q” first introduces humans to the Borg. Picard whines about losing 18 crewmembers in the ensuing battle, and in response Q lectures:
If you can’t take a little bloody nose, maybe you ought to go back home and crawl under your bed. It’s not safe out here. It’s wondrous, with treasures to satiate desires both subtle and gross. But it’s not for the timid.