My Head of House said I lacked certain necessary qualities..... - J.K. Rowling, Harry Potter and the Order of the Phoenix

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

"Youth can not know how age thinks and feels. But old men are guilty if they forget what it was to be young."

"Is it true that you shouted at Professor Umbridge?""Yes.""You called her a liar?""Yes.""You told her He Who Must Not Be Named is back?""Yes.""Have a biscuit, Potter."

"By all means continue destroying my possessions. I daresay I have too many."

"From now on, I don't care if my tea leaves spell 'Die, Ron, Die,' I'm chucking them in the bin where they belong."