Oliver Wendell Holmes twice escaped death as a young Union officer in the Civil War when musket balls missed his heart and spinal cord by a fraction of an inch at the Battles of Ball's Bluff and Antietam. He lived ever after with unwavering moral courage, unremitting scorn for dogma, and an insatiable intellectual curiosity. Named to the Supreme Court by Theodore Roosevelt at age sixty-one, he served for nearly three decades, writing a series...