Harry Potter and the Half-Blood Prince

"No, I thought not. You have not asked me, for instance, what is my favorite jam, to check that I am not an impostor. For future reference, Harry, it is raspberry... although of course, if I were a Death Eater, I would have been sure to find out my own jam preferences before impersonating myself."

"The Prophet is bound to report the truth occasionally," said Dumbledore, "if only accidentally."

"Don’t you see? Voldemort himself created his worst enemy, just as tyrants everywhere do! Have you any idea how much tyrants fear the people they oppress? All of them realize that, one day, amongst their many victims, there is sure to be one that rises against them and strikes back!"

"Age is foolish and forgetful when it underestimates youth."

"There is nothing to be feared from a body, Harry, any more than there is anything to be feared from the darkness... It is the unknown we fear when we look upon death and darkness, nothing more."

"(after drinking an emerald potion) "KILL ME!""

"(as Harry tells him "Don't worry.") "I am not worried, Harry, I am with you.""

"Dumbledore says people find it far easier to forgive others for being wrong than being right."

"Oh, come on, Harry, it's not Quidditch that's popular, it's you! You've never been more interesting, and frankly, you've never been more fanciable."

"You've said to us once before that there was a time to turn back if we wanted to. We've had time, haven't we?"

"(Describing why Ron failed the Apparition test) It was really unlucky, a tiny thing, the examiner just spotted that he'd left half an eyebrow behind..."

"(When Harry decides to go down to bury Aragog instead of getting the memory from Slughorn) This is Felix Felicis, I suppose? You haven't got another little bottle full of - I don't know - (Ron) Essence of Insanity?"

"The Aurors are part of the Rotfang Conspiracy, I thought everyone knew that. They're working from within to bring down the Ministry of Magic with a combination of dark magic and gum disease."

"(after Harry invites her to Slughorn's party) Ooh, yes, I'd love to! Is that why you dyed your eyebrows, for the party? Should I do mine, too?"

"'Oh, hello Harry,' said Luna. 'Did you know one of your eyebrows is bright yellow?'"

"I thought at first it was Moaning Myrtle in there, but it turned out to be Hermione."

"I enjoyed the [D.A.] meetings too. It was like having friends."

"Who blacked your eye, Granger? I want to send them flowers."

"You'd better hurry up, they'll be waiting for 'the Chosen Captain' — 'The Boy Who Scored'— whatever they call you these days."

"I'll be moving on to bigger and better things."

"You don't know what I'm capable of, you don't know what I've done!"

"I haven't got any options! I've got to do it! He'll kill me! He'll kill my whole family!"

"He even felt that he could endure Filch's wheezy criticisms of his tardiness, and rants about how his time-keeping would improve with the regular application of thumbscrews."

"He will only be gone from the school when none here are loyal to him. [about Albus Dumbledore]"

"[Harry thinks] how they had talked about fighting a losing battle, and that it was important to fight, and to fight again, and to keep fighting, to keep evil at bay, though never quite eradicated."

"Excellent. Really excellent. Right...I'm going down to Hagrid's."

"[Harry] Yes. [Snape] Yes, sir. [Harry] There's no need to call me "sir", Professor."

"[To Narcissa Malfoy] Going to get a few Death Eater pals to do us in, are you?"

"[To Ronald Weasley] Nice. Classy. You should definitely wear it in front of Fred and George."

"Snape! Snape! I taught him! I thought I knew him!"

"MERLIN'S BEARD!"

"Harry, m-boy!"

"Dumbledore put you up to this, didn't he? Didn't he?"

"Harry, I must insist you accompany me back to the castle immediately!"

"Don't use that name!"

"Avada Kedavra! (the Killing Curse, used to kill Dumbledore)"

"It is finished."

"DON'T CALL ME COWARD!"

"Your father only took me on when it was four to one. What would you call him?"

"And—forgive me—you speak of dangers… you were facing six teenagers, were you not?"

"You dare use my own spells against me, Potter? Yes. I'm the Half-Blood Prince."

"Oh, come and stir my cauldron, And if you do it right I'll boil you up some hot, strong love To keep you warm tonight."

"Well, we find we appreciate you more and more, Mum, now we're washing our own socks."

"[To Ron] What about you and Lavender, thrashing about like a pair of eels all over the place?"

"[To Harry] Looking for Ron? He's over there, the filthy hypocrite."

"[When Harry broke up with her] It's for some stupid, noble reason, isn't it?"

"[A tattoo she said was on Harry's Chest] I told her it's a Hungarian Horntail. Much more macho."

"[Ron's tattoo] A Pygmy Puff, but I didn't say where."

"[When Harry defends Fleur] I suppose you like the ways Phlegm says "'Arry", do you?"

"[On her boyfriend, Dean] ...last time I looked, he was definitely one boy, not five."