Konstantina

“The truth." Dumbledore sighed. "It is a beautiful and terrible thing, and should therefore be treated with great caution.”
― J.K. Rowling, Harry Potter and the Sorcerer's Stone

“Have you ever seen anything quite as pathetic?" said Malfoy. "And he’s supposed to be our teacher!"
Harry and Ron both made furious moves toward Malfoy, but Hermione got there first - SMACK!
She had slapped Malfoy across the face with all the strength she could muster. Malfoy staggered. Harry, Ron, Crabbe, and Goyle stood flabbergasted as Hermione raised her hand again.
"Don’t you dare call Hagrid pathetic you foul—you evil—"
"Hermione!" said Ron weakly and he tried to grab her hand as she swung it back.
"Get off Ron!"
Hermione pulled out her wand. Malfoy stepped backward. Crabbe and Goyle looked at him for instructions, thoroughly bewildered.
"C’mon," Malfoy muttered, and in a moment, all three of them had disappeared into the passageway to the dungeons.
"Hermione!" Ron said again, sounding both stunned and impressed.”
― J.K. Rowling, Harry Potter and the Prisoner of Azkaban

“Harry: This book belongs to Harry Potter.
Ron: Shared by Ron Weasley, because his fell apart.
Hermione: Why don't you buy a new one then?
Ron: Write on your own book, Hermione.
Hermione: You bought all those dungbombs on Saturday. You could have bought a new book instead.
Ron: Dungbombs rule.”
― J.K. Rowling, Fantastic Beasts and Where to Find Them

“Just because it’s taken you three years to notice, Ron, doesn't mean no one else has spotted I'm a girl!”
― J.K. Rowling, Harry Potter and the Goblet of Fire