“It is not power that corrupts but fear. Fear of losing power corrupts those who wield it and fear of the scourge of power corrupts those who are subject to it.”

“Power does not corrupt. Fear corrupts... perhaps the fear of a loss of power.”

“. . . in no instance has a system in regard to religion been ever established, but for the purpose, as well as with the effect of its being made an instrument of intimidation, corruption, and delus...”

“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.”