"The great poems, plays, novels, stories teach us how to go on living. . . . Your own mistakes, accidents, failures at otherness beat you down. Rise up at dawn and read something that matters as soon as you can."So Harold Bloom, the most famous literary critic of his generation, exhorts readers of his last book: one that praises the sustaining power of poetry. "Passionate. . . . Perhaps Bloom's most personal work, this is a...