His priority did not seem to be to teach them what he knew, but rather to impress upon them that nothing, not even... knowledge, was foolproof.

What are you doing with all those books anyway?" Ron asked. Just trying to decide which ones to take with us," said Hermione. When we're looking for the Horcruxes." Oh, of course," said Ron, clapping a hand to his forehead. "I forgot we'll be hunting down Voldemort in a mobile library.

Yeah, size is no guarantee of power,” said George. “Look at Ginny.” “What d’you mean?” said Harry. “You’ve never been on the receiving end of one of her Bat-Bogey Hexes, have you?

Warlock D. J. Prod of Didsbury says: “My wife used to sneer at my feeble charms, but one month into your fabulous Kwikspell course and I succeeded in turning her into a yak! Thank you, Kwikspell!

Understanding is the first step to acceptance, and only with acceptance can there be recovery.

Why had he never appreciated the miracle that he was, brain and nerve and bounding heart?

Oh please," said Zacharias Smith, rolling his eyes and folding his arms. "I don't think Expelliarmus is exactly going to help us against You-Know-Who, do you?" "I've used it against him," Harry said quietly. "It saved my life last June.