Hermione stopped dead; Harry had heard it too. Somebody had moved close behind them among the dark bookshelves. They waited, and a moment later the vulturelike countenance of Madam Pince appeared around the corner, her sunken cheeks, her skin like parchment, and her long hooked nose illuminated unflatteringly by the lamp she was carrying. "The library is now closed," she said. "Mind you return anything you have borrowed to the correct — what have you been doing to that book, you depraved boy?"
"It isn't the library's, it's mine!" said Harry hastily, snatching his copy of Advanced Potion-Making off the table as she lunged at it with a clawlike hand.
"Despoiled!" she hissed. "Desecrated! Befouled!"
-Madam Pince turns out to be completely terrifying in Harry Potter and the Half-Blood Prince by JK Rowling
This was followed by Harry and Hermione speculating about Madam Pince/Argus Filch (Fince, btw, is their pairing name) and a nice change from the majority of the book which seems to be Hermione and Ron at eachother's throats. Which the friends do every book, actually, so no big surprise. I guess it adds strife.
Non-spoilerly, at this moment in the book I really feel for Crabbe and Goyle. And I really like Slughorn, no matter how much Ann insists he probably drowns Crookshanks. I'm loving Harry's lessons with Dumbledore, too. This book has been slipping away super fast, I've barely started reading it and I'm already over halfway done.
I'll leave you with this moment of house elf zen:
"Master Malfoy moves with a nobility that befits his pure blood," croaked Kreacher at once. "His features recall the fine bones of my mistress and his manners are those of —"
"Draco Malfoy is a bad boy!" squeaked Dobby angrily. "A bad boy who — who —"
-Dobby and Kreacher return from spying on Draco Malfoy. They seem to have different priorities
Also, I could have done with less curb-stomping in this book.