Harry Potter and the Half-Blood Prince

"It is impossible to manufacture or imitate genuine affection."

"Dark and difficult times lie ahead. Soon we must all face the choice between what is right and what is easy."

"It is our choices that show what we truly are, far more than our abilities."

"After all this time? Always."

"Magic always leaves traces."

"Even the wisest among us must sometimes accept that we do not know all the answers."

"Every human life is worth the same and worth saving."

"Home-made better is sometimes—hardly ever, or perhaps not at all times, but you catch my meaning."

"You are bound to fail, unless you are prepared to do what it takes to succeed."

"I have nothing to be ashamed of, Madam."

"It is my fault that he had to lose his innocence as he did."

"The time is here. The time has come to act."

"Youth cannot know how age thinks and feels."

"A great deal of magic can be produced by the simple actions and reactions, the throwing of a veil over what we do not wish to see."

"His worst fear is death, ignominious death."

"There comes a time when we have to choose between what is easy and what is right."

"Where your treasure is, there will your heart be also."

"I do not think we can expect Hagrid's help in this."

"To the well-organized mind, death is but the next great adventure."

"Pain and sorrow are more teachers than joy ever could be."

"He cannot love, that is the root of all that is wrong with him."

"It is foolish to trust the judgement of a man in love."

"Voldemort fears death above all things."

"Such a short time to take a boy and turn him into a man."

"I am not worried, Harry. I am with you."

"The very heart of the castle has been opened."

"Even Muggles notice when they lose a child at birth."

"Ah, I see the gleam in your eye, Harry. Let us discuss elementals."

"The truth is a beautiful and terrible thing, and should therefore be treated with great caution."

"It is important to fight and fight again, and keep fighting, for only then can evil be kept at bay, though never quite eradicated."