But then she snapped your neck.” Tears rolled down his face. “And I felt you die,” he whispered. Tears were sliding down my own cheeks. - Sarah J. Maas

It would not take a monster to destroy a monster - but light, light to drive out darkness.

"Why are you crying?"
"Because," she whispered, her voice shaking, "you remind me of what the world ought to be. What the world can be."

You collect scars because you want proof that you are paying for whatever sins you've committed. And I know this because I've been doing the same damn thing for two hundred years. Tell me, do you think you will go to some blessed Afterworld, or do you expect a burning hell? You're hoping for hell — because how could you face them in the Afterworld? Better to suffer, to be damned for eternity and —