Such nonsense!" declared Dr Greysteel. "Whoever heard of cats doing anything useful!" "Except for staring at one in a supercilious manner," said Strange. "That has a sort of moral usefulness, I suppose, in making one feel uncomfortable and encouraging sober reflection upon one's imperfections.

Jonathan Strange and Mr Norrell (ed. Bloomsbury Publishing, 2009) - ISBN: 9781408803745