Joke Origin: A Clear Conscience Is Usually a Sign of a Bad Memory

Mark Twain? Steven Wright? Senator Sorghum? Philander Chase Johnson? Neal O’Hara? Felix Nieto del Rio? Anonymous? Question for Quote Investigator: A morally upright individual strives to maintain a clear conscience. Yet, satisfying this goal is not always praiseworthy: Often a person with a clear conscience merely has a poor memory. This quip has been credited …