Jack London (1876-1916) lived a life of excess by conventional standards. Daring, outspoken, politically radical, amazingly imaginative, and emotionally complicated, the author of literary classics such as The Call of the Wild and The Sea-Wolf emerges in Kenneth K. Brandt's new biography as a vital and flawed embodiment of conflicting yearnings. London's exuberant energies propelled him out of the working class to become a world-famous...