The primary theme of the story is of survival and a return to primitivism. Pizer writes that the theme is allegorical and clear: "the strong, the shrewd, and the cunning shall prevail when ... life is bestial".[28] Pizer also finds evident in the story a Christian theme of love and redemption, as shown by Buck's refusal to revert to violence until after the death of Thornton, who won Buck's love and loyalty.[29]London, who went so far as to fight for custody of one of his own dogs, understood that loyalty between dogs (particularly working dogs) and their masters is built on trust and love.[30]
BACKGROUND
By 1897, California native Jack London had traveled around the United States as a hobo, returned to California to finish high school (he dropped out at age 14), and spent a year in college at Berkeley. He then traveled to the Klondike by way of Alaska during the height of the Klondike Gold Rush, later saying of the experience: "It was in the Klondike I found myself."[4] Leaving California in July, he traveled to Dyea, where he went inland. To reach the gold fields, he and his party transported their gear over the Chilkoot Pass, often carrying on their backs loads of up to 100 pounds (45 kg). They staked claims to eight gold mines along the Stewart River.[5]
London stayed in the Klondike for almost a year. He lived for a time in the frontier town of Dawson City, before moving to a nearby winter camp, where he spent the winter reading books he had brought: Charles Darwin's The Origin of the Species; and John Milton's Paradise Lost.[6] In the winter of 1898, Dawson City (today mostly deserted) was a city with about 30,000 miners, a saloon, an opera house, and a street of brothels.[7]
In the spring of 1898, as the annual gold stampeders began to stream into the area, London left. He had contracted scurvy, common in the Arctic winters, where fresh produce was unavailable. When London's gums began to swell he decided to return to California. With his