Indifference and neglect often do much more damage than outr... - J.K. Rowling, Harry Potter and the Order of the Phoenix

"My Head of House said I lacked certain necessary qualities...like the ability to behave myself."

"Well, we were always going to fail that one,"said Ron gloomily as they ascended the marble staircase. He had just made Harry feel rather better by telling him how he told the examiner in detail about the ugly man with a wart on his nose in the crystal ball, only to look up and realize he had been describing the examiner's reflection."

"Wit beyond measure is a man's greatest treasure."

"I’ll make Goyle do lines, it’ll kill him, he hates writing,” said Ron happily. He lowered his voice to Goyle’s low grunt and, screwing up his face in a look of pained concentration, mimed writing in midair. “I... must... not... look... like... a... baboon’s... backside."

"Accio Brain!"