Here are several funny and memorable quotes from the popular Harry Potter books. To make sure I'm not twisting the author's words, you may want to search for the quotes to get some context. If pages are no longer available, google's cache may help to see the quote in context.

Her ink-and-paper twin
Chapter 1
     froglike little man wearing a long silver wig (alltheweb)
he had turned the Prime Minister's teacup into a gerbil (alltheweb)
Chapter 2
Chapter 10
silvery contents of the bottle into the Pensieve
Chapter 15
any moment that she was not kissing Ron as a moment wasted
Chapter 20
Dean was laughing about McLaggen hitting that Bludgu
Chapter 30
Scrimgeour looking grave and dignified