Killing is not so easy as the innocent believe. - J.K. Rowling, Harry Potter and the Half-Blood Prince

"I was supposed to be waiting up here when you got back, only your Phoenix lot got in the way...”“Yes, they do that,” said Dumbledore."

"Do you remember me telling you we are practicing non-verbal spells, Potter?""Yes,"said Harry stiffly."Yes, sir.""There's no need to call me "sir"Professor."The words had escaped him before he knew what he was saying."

"Let us step into the night and pursue that flighty temptress, adventure."

"I don't mean to be rude—"he began, in a tone that threatened rudeness in every syllable."Yet, sadly, accidental rudeness occurs alarmingly often,"Dumbledore finished the sentence gravely."

"Well you seemed too busy to call him a prat and I thought someone should."