WHY? (SHOULD I BELIEVE THAT?) by: Rev. Dr. Edward Frost In Walker Percy’s marvelous novel “The Last Gentleman,” the scene is a hospital room. Present are Will Barrett, a rather flaky, perhaps overly-earnest seeker of life’s meaning; young Jamie, the tragic figure, who Will took under his wing as mentor and paid companion; Jamie now at the end of his meager days, dying; and a…