Harry Potter and the Half-Blood Prince

"You're being ridiculous."

"I never thought you'd do it."

"That's a really horrible way to speak about Quidditch."

"I think I'll just go back to bed and pretend none of this happened."

"You can't be serious about Ginny."

"Blimey, Harry."

"I'm not worried about You-Know-Who."

"Wandering off to save a girl in the middle of a Quidditch match."

"Greatness inspires envy, envy engenders spite, spite spawns lies."

"Understanding is a very beautiful thing."

"There is nothing to be feared from a body, Harry, nothing whatsoever."

"Voldemort wouldn't want his followers knowing that he can feel pain, that he can be hurt."

"Words are, in my not-so-humble opinion, our most inexhaustible source of magic."

"The consequences of our actions are always so complicated, so diverse, that predicting the future is a very difficult business indeed."

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

"Age is foolish and forgetfulness when it strives to tell the young how they should live their lives."

"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."

"We are all works in progress."

"Every choice echoes through time."

"The past cannot be changed, only understood."

"Hope is the last thing we lose."

"Forgiveness is the hardest magic of all."

"Evil is not born, it is created."

"Truth is harder to accept than comfortable lies."

"Knowledge without wisdom is dangerous."

"Fear is a choice we make."

"Redemption is possible for those who seek it."

"Death is but the next adventure."

"Youth is wasted on the young."