Do 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. RowlingHe didnโt know what he was going to โ but it had to be better than what he was leaving behind.
J. K. Rowling