“I will not calm down!”

“I don’t believe him,” said Hermione in a very unsteady voice, the moment they were out of earshot of Hagrid. “I don’t believe him. I really don’t believe him. . . .”“Calm down,” said Harry.“Calm down!” she said feverishly. “A giant! A giant in the forest! And we’re supposed to give him English lessons! Always assuming, of course, we can get past the herd of murderous centaurs on the way in and out! I — don’t — believe — him!”

“Oliver, calm down!” said Fred, looking slightly alarmed. “We’re taking Hufflepuff very seriously. Seriously.”

“I think that perhaps if I had had to slow down the ideas so that I could capture them on paper I might have stifled some of them.”

“I DON'T CARE!" Harry yelled at them, snatching up a lunascope and throwing it into the fireplace. "I'VE HAD ENOUGH, I'VE SEEN ENOUGH, I WANT OUT, I WANT IT TO END, I DON'T CARE ANYMORE!""You do care," said Dumbledore. He had not flinched or made a single move to stop Harry demolishing his office. His expression was calm, almost detached. "You care so much you feel as though you will bleed to death with the pain of it.”

“Mad Eye' Moody on the Avada Kedavra curse: "Not nice," he said calmly. "Not pleasant. And there's no counter curse. There's no blocking it. Only one known person has ever survived it, and he's sitting right in front of me.”

“I think I'll just go down and have some pudding and wait for it all to turn up - it always does in the end.”