“I shouldn't believe anything I say, if I were you-and that includes what I just told you.”

“Religion isn't the cause of wars, it's the excuse.”

“There are two schools of thought about the resilience of time. The first is that time is highly volatile, with every small event altering the possible outcome of the earth's future. The other view ...”

“Individual words, sounds, squiggles on paper with no meanings other than those with which our imagination can clothe them.”

“Sometimes, a word succeeds beyond the wildest dreams of its creators, like a virus sent into the world to infect common speech.”

“Take no heed of her.... She reads a lot of books.”

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

“The truth is rarely pure and never simple.”

“Never tell the truth to people who are not worthy of it.”

“The fool doth think he is wise, but the wise man knows himself to be a fool.”

“The secret of life, though, is to fall seven times and to get up eight times.”

“It is the mark of an educated mind to be able to entertain a thought without accepting it.”