Don’t put your wand there, boy! ... Better wizards than you... - J.K. Rowling, Harry Potter and the Order of the Phoenix

"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."

"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."

"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."

"You know, Minister, I disagree with Dumbledore on many counts...but you cannot deny he's got style..."

"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."