Beatrice

“Don’t put your wand there, boy!” roared Moody. “What if it ignited? Better wizards than you have lost buttocks, you know!” “Who d’you know who’s lost a buttock?” the violet-haired woman asked Mad-Eye interestedly. “Never you mind, you just keep your wand out of your back pocket!” growled Mad-Eye. “Elementary wand safety, nobody bothers about it anymore . . .” He stumped off toward the kitchen. “And I saw that,” he added irritably, as the woman rolled her eyes at the ceiling.”
― J.K. Rowling, Harry Potter and the Order of the Phoenix

“Did you like question ten, Moony?" asked Sirius as they emerged into the entrance hall.
"Loved it," said Lupin briskly. "Give five signs that identify the werewolf. Excellent question."
"D'you think you managed to get all the signs?" said James in tones of mock concern.
"Think I did," said Lupin seriously, as they joined the crowd thronging around the front doors eager to get out into the sunlit grounds. "One: He's sitting on my chair. Two: He's wearing my clothes. Three: His name's Remus Lupin...”
― J.K. Rowling, Harry Potter and the Order of the Phoenix

“Books are like mirrors: if a fool looks in, you cannot expect a genius to look out.”
― J.K. Rowling

“So light a fire!" Harry choked. "Yes...of course...but there's no wood!" ...
"HAVE YOU GONE MAD!" Ron bellowed. "ARE YOU A WITCH OR NOT!”
― J.K. Rowling, Harry Potter and the Sorcerer's Stone