Themes are the fundamental and often universal ideas explored in a literary work.

The Indispensable Struggle for Mastery

The Call of the Wild is a story of transformation in which the old Buck—the civilized, moral Buck—must adjust to the harsher realities of life in the frosty North, where survival is the only imperative. Kill or be killed is the only morality among the dogs of the Klondike, as Buck realizes from the moment he steps off the boat and watches the violent death of his friend Curly. The wilderness is a cruel, uncaring world, where only the strong prosper. It is, one might say, a perfect Darwinian world, and London’s depiction of it owes much to Charles Darwin, who proposed the theory of evolution to explain the development of life on Earth and envisioned a natural world defined by fierce competition for scarce resources. The term often used to describe Darwin’s theory, although he did not coin it, is “the survival of the fittest,” a phrase that describes Buck’s experience perfectly. In the old, warmer world, he might have sacrificed his life out of moral considerations; now, however, he abandons any such considerations in order to survive.

But London is not content to make the struggle for survival the central theme of his novel; instead, his protagonist struggles toward a higher end, namely mastery. We see this struggle particularly in Buck’s conflict with Spitz, in his determination to become the lead dog on Francois and Perrault’s team, and, at the end of the novel, in the way that he battles his way to the leadership of the wolf pack. Buck does not merely want to survive; he wants to dominate—as do his rivals, dogs like Spitz.

In this quest for domination, which is celebrated by London’s narrative, we can observe the influence of Friedrich Nietzsche, a German philosopher of the late 19th century. Nietzsche’s worldview held that the world was composed of masters, those who possessed what he called “the will to power,” and slaves, those who did not possess this will. Nietzsche delighted in using animal metaphors, comparing masters to “birds of prey” and “blonde beasts” and comparing slaves to sheep and other herd animals. London’s Buck, with his indomitable strength and fierce desire for mastery, is a canine version of Nietzsche’s masterful men, his Napoleon Bonapartes and Julius Caesars. Buck is a savage creature, in a sense, and hardly a moral one, but London, like Nietzsche, expects us to applaud this ferocity. His novel suggests that there is no higher destiny for man or beast than to struggle, and win, in the battle for mastery.

The Power of Ancestral Memory and Primitive Instincts

When Buck enters the wild, he must learn countless lessons in order to survive, and he learns them well. But the novel suggests that his success in the frozen North is not merely a matter of learning the ways of the wild; rather, Buck gradually recovers primitive instincts and memories that his wild ancestors possessed, which have been buried as dogs have become civilized creatures. The technical term for what happens to Buck is atavism—the reappearance in a modern creature of traits that defined its remote forebears.

London returns to this theme again and again, constantly reminding us that Buck is “retrogressing,” as the novel puts it, into a wilder way of life that all dogs once shared. “He was older than the days he had seen and the breaths he had drawn,” we are told. “He linked the past with the present, and the eternity behind him throbbed through him in a mighty rhythm to which he swayed as the tides and seasons swayed.” Buck even has occasional visions of this older world, when humans wore animal skins and lived in caves, and when wild dogs hunted their prey in the primeval forests. His connection to his ancestral identity is thus more than instinctual; it is mystical. The civilized world, which seems so strong, turns out to be nothing more than a thin veneer, which is quickly worn away to reveal the ancient instincts lying dormant underneath. Buck hears the call of the wild, and London implies that, in the right circumstances, we might hear it too.

The Laws of Civilization and of Wilderness

While the two lives that Buck leads stand in stark contrast to each other, this contrast does not go unchallenged throughout the novel. His life with Judge Miller is leisurely, calm, and unchallenging, while his transition to the wilderness shows him a life that is savage, frenetic, and demanding. While it would be tempting to assume that these two lives are polar opposites, events later in the novel show some ways in which both the wild and civilization have underlying social codes, hierarchies, and even laws. For example, the pack that Buck joins is not anarchic; the position of lead dog is coveted and given to the most powerful dog. The lead dog takes responsibility for group decisions and has a distinctive style of leadership; the main factor in the rivalry between Buck and Spitz is that Buck sides with the less popular, marginal dogs instead of the stronger ones. Buck, then, advocates the rights of a minority in the pack—a position that is strikingly similar to that of his original owner, the judge, who is the novel’s most prominent example of civilization.

The rules of the civilized and uncivilized worlds are, of course, extremely different—in the wild, many conflicts are resolved through bloody fights rather than through reasoned mediation. But the novel suggests that what is important in both worlds is to understand and abide by the rules which that world has set up, and it is only when those rules are broken that we see true savagery and disrespect for life. Mercedes, Hal, and Charles enter the wild with little understanding of the rules one must follow to become integrated and survive. Their inability to ration food correctly, their reliance upon their largely useless knife and gun, and their disregard for the dogs’ suffering all attest to laws of the wilderness that they misunderstand or choose to ignore. As a result, the wilderness institutes a natural consequence for their actions. Precisely because they do not heed the warnings that the wild provides via one of its residents, John Thornton, they force the team over unstable ice and fall through to their deaths. The novel seems to say that the wild does not allow chaos or wanton behavior but instead institutes a strict social and natural order different from, but not inferior to, that of the civilized world.

The Membership of the Individual in the Group

When Buck arrives in the wild, his primordial instincts do not awaken immediately, and he requires a great deal of external help before he is suited to life there. Help arrives in realizations about the very different rules that govern the world outside of civilization, but also in the support of the pack of which he becomes a part. Two dogs in particular, Dave and Sol-leks, after having established their seniority, instruct Buck in the intricacies of sled pulling. Furthermore, the group members take pride in their work, even though they are serving men. When they make trips in good time, they congratulate themselves—they all participate in a common enterprise.

At the same time, however, one of the most valued traits in the wilderness is individualism. If The Call of the Wild is a story about ultimately achieving mastery over a foreign, primal world, that mastery is achieved only through separation from the group and independent survival. Throughout much of the story, Buck is serving a master or a pack; even as a leader he is carrying out someone else’s commands and is responsible for the well-being of the group. In many ways, then, when John Thornton cuts Buck free from his harness, he is also beginning the process of Buck’s separation from a pack mentality. Although Buck continues to serve Thornton, his yearnings for a solitary life in the wild eventually overcome him.

The balance between individual and group is disrupted once more, however, toward the end of the novel, when Buck becomes the leader of a wolf pack. Although the pack is much different from the dog pack whose responsibility was to serve humans by pulling sleds, the message seems to be that, while encouraging the skills to survive on one’s own, the wild ultimately requires the cooperation of a group in order to ensure individual survival.

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