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.
J. K. RowlingHarry - you're a great wizard, you know." "I'm not as good as you," said Harry, very embarrassed, as she let go of him. "Me!" said Hermione. "Books! And cleverness! There are more important things - friendship and bravery and - oh Harry - be careful!
J. K. RowlingDo you remember me telling you we are practicing non-verbal spells, Potter?" "Yes," said Harry stiffly. "Yes, sir." "There's no need to call me "sir" Professor." The words had escaped him before he knew what he was saying.
J. K. Rowling