“Nothing like a nighttime stroll to give you ideas.”

“But as he reached the ground and sprinted towards the dais, Lupin grabbed Harry around the chest, holding him back.There's nothing you can do, Harry -'Get him, save him, he's only just gone through!'- it's too late, Harry.'We can still reach him -' Harry struggled hard and viciously, but Lupin would not let go...There's nothing you can do, Harry...nothing...he's gone.”

“Would you like me to [kill you] now?" asked Snape, his voice heavy with irony. "Or would you like a few moments to compose an epitaph?”

“There are some things you can't share without ending up liking each other, and knocking out a twelve-foot mountain troll is one of them.”

“Kill me then,' panted Harry, who felt no fear at all, but only rage and contempt. 'Kill me like you killed him, you coward-'DON'T-' screamed Snape, and his face was suddenly demented, inhuman, as though he was in as much pain as the yelping, howling dog stuck in the house behind them- 'CALL ME A COWARD!”

“You have to kill a lot of trees before you write anything good.”

“Children's books aren't textbooks. Their primary purpose isn't supposed to be "Pick this up and it will teach you this." It's not how literature should be. You probably do learn something from every book you pick up, but it might be simply how to laugh.”