" Learnin’ how not to do things is as hard as learning how to do them. Harder, maybe. There’d be a sight more frogs in this world if I didn’t know how not to turn people into them. And big pink balloons, too. "

― Terry Pratchett , Tiffany Aching 4-Book Collection: A Hat Full of Sky / The Wee Free Men / Wintersmith / I Shall Wear Midnight