任何人都可以告密，但要重新告密则需要一定的机智。

Sir John Colville’s diary, The Fringes of Power, paraphrases this well-known phrase of Churchill’s, which may, in fact, be manufactured since no direct attribution can be found, but Richard M. cited in Langworth, editor of Churchill: In His Own Words, feels that ‘re-rat’ has been mentioned by too many sources to doubt that Churchill coined it.