“There are much more terrible things than physical injury.”

“No man or woman alive, magical or not, has ever escaped some form of injury, whether physical, mental, or emotional. To hurt is as human as to breathe.”

“Indifference and neglect often do much more damage than outright dislike.”

“Then he heard a terrible cry that pulled at his insides, that expressed agony of a kind that neither flame nor curse could cause, and he stood up, swaying, more frightened than he had been that day, more frightened, perhaps, than he had been in his whole life...”

“On the other hand, the Prince had proved a much more effective teacher than Snape so far.”

“Divination is turning out to be much more trouble than I could have foreseen, never having studied the subject myself.”

“The truth." Dumbledore sighed. "It is a beautiful and terrible thing, and should therefore be treated with great caution.”