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. RowlingWhy was she always so craven, so apologetic? He had always seen Ruth as separate, good and untainted. As a child, his parents had appeared to him as starkly black and white, the one bad and frightening, the other good and kind. Yet as he had grown older, he kept coming up hard in his mind against Ruth's willing blindness, to her constant apologia for his father, to the unshakeable allegiance to her false idol.
J. K. Rowling