Let us step into the night and pursue that flighty temptress... - J.K. Rowling, Harry Potter and the Half-Blood Prince

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

"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."

"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."

"Don't count your owls before they are delivered."

"I am not worried, Harry,"said Dumbledore, his voice a little stronger despite the freezing water. "I am with you."