FICTION We all find it easier to describe people who annoy or hurt us, but we are less articulate when it comes to evoking the good people we know. Novelists have the same problem: The virtuous are never as engaging as the flawed and wicked -- think Scarlett O'Hara and Mr. Wickham. But British writer Rose Tremain, in her new novel, "The Road Home," affectingly celebrates a man who is both good and engaging.