When asked about his Robin training regime…

Batman: I leave him all the tools he needs. It’s “do or die”. If he chooses correctly, he’ll conquer the hornets.

Superman: And if he doesn’t?

Batman: He’ll die.

Superman: I… beg your pardon?

Batman: When did the phrase “do or die” become so corrupted, Clark?

If you ever wondered why Dick, Jason, Tim, and Damian were so impossibly skilled. (May have been a cakewalk for Damian, though.)