Book excerpt: Robert Louis Stevenson (1850-1894) is best known as the author of The Strange Case of Dr. Jekyll and Mr. Hyde, Treasure Island, and Kidnapped, but his essays comprise an oft-overlooked trove of gems, intriguing in their content and generous in their scope. This collection of nearly three dozen of Stevenson's best essays—the only anthology of its kind— spans his brief life and includes many of his most celebrated pieces and some others previously unpublished.