Jasna

“Then the glow grew brighter: a holographic golden sickle with a few sheaves of wheat, rotating just above Meg McCaffrey.
A boy in the crowd gasped. "She's a communist!”
― Rick Riordan, The Hidden Oracle

“I will hurt you for this. I don't know how yet, but give me time. A day will come when you think yourself safe and happy, and suddenly your joy will turn to ashes in your mouth, and you'll know the debt is paid.”
― George R.R. Martin, A Clash of Kings

“Granny Weatherwax was often angry. She considered it one of her strong points. Genuine anger was one of the world's greatest creative forces. But you had to learn how to control it. That didn't mean you let it trickle away. It meant you dammed it, carefully, let it develop a working head, let it drown whole valleys of the mind and then, just when the whole structure was about to collapse, opened a tiny pipeline at the base and let the iron-hard stream of wrath power the turbines of revenge.”
― Terry Pratchett, Wyrd Sisters

“Harry was left to ponder in silence the depths to which girls would sink to get revenge.”
― J.K. Rowling, Harry Potter and the Half-Blood Prince