Jack represents evil and violence, the dark side of human nature. A former choirmaster and "head boy" at his school, he arrived on the island having experienced some success in exerting control over others by dominating the choir with his militaristic attitude. He is eager to make rules and punish those who break them, although he consistently breaks them himself when he needs to further his own interests. His main interest is hunting, an endeavor that begins with the desire for meat and builds to the overwhelming urge to master and kill other living creatures. Hunting develops the savagery that already ran close to his surface, making him "ape-like" as he prowls through the jungle. His domain is the emotions, which rule and fuel his animal nature.
The conflict on the island begins with Jack attempting to dominate the group rather than working with Ralph to benefit it. He frequently impugns the power of the conch, declaring that the conch rule does not matter on certain parts of the island. Yet he uses the conch to his advantage when possible, such as when he calls his own assembly to impeach Ralph. For him, the conch represents the rules and boundaries that have kept him from acting on the impulses to dominate others. Their entire lives in the other world, the boys had been moderated by rules set by society against physical aggression. On the island, however, that social conditioning fades rapidly from Jack's character. He quickly loses interest in that world of politeness and boundaries, which is why he feels no compunction to keep the fire going or attend to any of the other responsibilities for the betterment or survival of the group.
