Don’t put your wand there, boy! ... Better wizards than you... - 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."

"His priority did not seem to be to teach them what he knew, but rather to impress upon them that nothing, not even... knowledge, was foolproof."

"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."

"Why were you lurking under our window?""Yes - yes, good point, Petunia! What were you doing under our windows, boy?""Listening to the news,"said Harry in a resigned voice.His aunt and uncle exchanged looks of outrage."Listening to the news! Again?""Well, it changes every day, you see,"said Harry."

"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."