“It is my observations, though, that happiness limits the amount of suffering one is willing to inflict upon others”

“Surely if we knew what bitterness fate held in store, we would shrink back in fear and let the cup of life pass us by untasted.”

“All knowledge is worth having.”

“A little truth seasons a lie like salt.”

“This is the secret that none dares tell who fights for a cause. Dying, we are all alike.”

“If you will not die for us, you cannot ask us to die for you.”

“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.”