Jack London (1876-1916) was an American author, journalist, and social activist. Before making a living at his writing, he spent time as an oyster pirate, a sailor, a cannery worker, a gold miner, and a journalist. He was a pioneer in the then-burgeoning world of commercial magazine fiction and was one of the first fiction writers to obtain worldwide celebrity and a large fortune from his fiction writing. He is best known for his novels The Call of the Wild and White Fang, both set during the Klondike gold rush, as well as the short stories "To Build a Fire," "An Odyssey of the North," and "Love of Life." He also wrote of the South Pacific in such stories as "The Pearls of Parlay" and "The Heathen." He was a passionate advocate of unionization, socialism, and the rights of workers and wrote several powerful works dealing with these topics, including The Iron Heel, The People of the Abyss, and The War of the Classes.