John Griffith "Jack" London (born John Griffith Chaney, January 12, 1876 – November 22, 1916) was an American author, journalist, and social activist. He was a pioneer in the field of commercial magazine fiction and was one of the first fiction writers to obtain worldwide celebrity. Some of his most famous works include The Call of the Wild and White Fang, both set in 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", and of the San Francisco Bay area in The Sea Wolf. London was a passionate advocate of unionization, socialism, and the rights of workers and wrote several powerful works dealing with these topics such as his dystopian novel The Iron Heel, his non-fiction exposé The People of the Abyss, and The War of the Classes.
In several of his stories he mentions Theosophy, its literature and authors. For example, in his book Martin Eden he mentions Mme. Blavatsky's The Secret Doctrine and, perhaps, his own experience in reading this book:
Passing through the City Hall Park, he had noticed a group of men . . . earnestly carrying on a discussion. He joined the listeners, and heard a new, alien tongue in the mouths of the philosophers of the people. . . . He heard hundreds of technical words that were new to him, belonging to fields of thought that his meagre reading had never touched upon. . . . Then there was a black-eyed restaurant waiter who was a theosophist, a union baker who was an agnostic, an old man who baffled all of them with the strange philosophy that what is is right. . . .
Martin Eden’s head was in a state of addlement when he went away after several hours, and he hurried to the library to look up the definitions of a dozen unusual words. And when he left the library, he carried under his arm four volumes: Madam Blavatsky’s “Secret Doctrine,” “Progress and Poverty,” “The Quintessence of Socialism,” and, “Warfare of Religion and Science.” Unfortunately, he began on the “Secret Doctrine.” Every line bristled with many-syllabled words he did not understand. He sat up in bed, and the dictionary was in front of him more often than the book. He looked up so many new words that when they recurred, he had forgotten their meaning and had to look them up again. He devised the plan of writing the definitions in a note-book, and filled page after page with them. And still he could not understand. He read until three in the morning, and his brain was in a turmoil, but not one essential thought in the text had he grasped. He looked up, and it seemed that the room was lifting, heeling, and plunging like a ship upon the sea. Then he hurled the “Secret Doctrine” and many curses across the room, turned off the gas, and composed himself to sleep. Nor did he have much better luck with the other three books. It was not that his brain was weak or incapable; it could think these thoughts were it not for lack of training in thinking and lack of the thought-tools with which to think.