"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."
"Yeah, Quirrell was a great teacher. There was just that minor drawback of him having Lord Voldemort sticking out of the back of his head!"
"We can't choose our fate, but we can choose others. Be careful in knowing that."
"Well, we were always going to fail that one,"said Ron gloomily as they ascended the marble staircase. He had just made Harry feel rather better by telling him how he told the examiner in detail about the ugly man with a wart on his nose in the crystal ball, only to look up and realize he had been describing the examiner's reflection."
"You can laugh! But people used to believe there were no such things as the Blibbering Humdinger or the Crumple-Horned Snorkack!"
"Would you like a cough drop Dolores?"