“If you really want to understand a man, don't just listen to what he says but watch what he does.”

“I am older than you. Believe me, there is no other way to live on earth. Men are not open to truth or reason. They cannot be reached by a rational argument. The mind is powerless against them. Yet ...”

“I writeNotFor the sake of gloryNot For the sake of fameNotFor the sake of successBut for the sake of my soul”

“The invisible and the non-existent look very much alike.”

“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.”