Sally Bedell Smith, dogged biographer and author of Prince Charles: The Passions and Paradoxes of an Improbable Life, out this week from Penguin Random House, has collected an exhaustive file of facts about the future king of England. Unlike his mother, Charles is not what you might call a beloved figure. And while Bedell Smith doesn't spare the touchy-feely, parapsychology loving, Dumbo-eared Charles, her portrait is also rich with sympathy, even affection. Bullied as a youth by his overbearing father (“Philip was the original alpha male,” Smith says), Charles spent his whole life seeking approval. Cowed by a sense of...