Everyone's favorite know-it-all wizard makes an oh-so-brief appearance in this book. On the "This Book Belongs to Harry Potter" page, Hermione shares a short exchange with Ron that reinforces everything sensible we've come to love about her in this series:
RON: Shared by Ron Weasley because his fell apart
HERMIONE: Why don't you buy a new book then?
RON: Write in your own book Hermione.
HERMIONE: You bought all those dungbombs on Saturday. You could have bought a new book instead.
RON: Dungbombs rule!
As always, Hermione is logical and to the point. This is a witch that really uses her brain.
Ron? Not so much.
For more on Hermione, try starting with our character guide on her in Harry Potter and the Sorcerer's Stone.