Harry, don't go picking a row with Malfoy, don't forget, he'... - J.K. Rowling, Harry Potter and the Order of the Phoenix

"Accio Brain!"

"Give her hell from us, Peeves."

"The mind is a complex and many-layered thing, Potter... or at least, most minds are..."

"You're a prefect? Oh Ronnie! That's everyone in the family!""What are Fred and I? Next door neighbors?"

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