“There is a room in the Department of Mysteries, that is kept locked at all times. It contains a force that is at once more wonderful and more terrible than death, than human intelligence, than forces of nature. It is also, perhaps, the most mysterious of the many subjects for study that reside there. It is the power held within that room that you possess in such quantities and which Voldemort has not at all. That power took you to save Sirius tonight. That power also saved you from possession by Voldemort, because he could not bear to reside in a body so full of the force he detests. In the end, it mattered not that you could not close your mind. It was your heart that saved you.”

“In the end, it mattered not that you could not close your mind. It was your heart that saved you.”

“There is no greater power than that of a laugh and happiness is a force which can save a person from the horrors of the world.”

“Every life force has a color and a tone. Many in your world would call this an aura, but it's much more complicated than that as anyone who could see would be able to tell you. Every life force carries a certain amount of power. Only those with the ability to use magic can draw upon the force of nature. And even that isn't accurate. The ability to use nature as the driving force behind your own power is a very intricate magic.”

“Your mother died to save you. If there is one thing Voldemort cannot understand, it is love. He didn't realize that love as powerful as your mother's for you leaves its own mark. Not a scar, no visible sign… to have been loved so deeply, even though the person who loved us is gone, will give us some protection forever. It is in your very own skin. Quirrel, full of hatred, greed, and ambition, sharing his soul with Voldemort, could not touch you for this reason. It was agony to touch a person marked by something so good.”

“He possessed the power. He held it in his hand. A power stronger than the power of money or the power of terror or the power of death: the invincible power to command the love of mankind. There was only one thing that power could not do: it could not make him able to smell himself.”