Richard Grayson has been keeping a daily diary compulsively since the summer of 1969, when he was an 18-year-old agoraphobic about to venture out into the world - or at least the world around him in Brooklyn. His diary, approximately 600 words a day without missing a day since August 1, 1969, now totals over 9 million words, rivaling the longest diaries ever written. But Grayson is not merely an eccentric with graphomania. His nonfiction has appeared...