Civilization vs. Savagery
The central concern of Lord of the Flies is the conflict between two competing impulses that exist within all human beings: the instinct to live by rules, act peacefully, follow moral commands, and value the good of the group against the instinct to gratify one’s immediate desires, act violently to obtain supremacy over others, and enforce one’s will. This conflict might be expressed in a number of ways: civilization vs. savagery, order vs. chaos, reason vs. impulse, law vs. anarchy, or the broader heading of good vs. evil. Throughout the novel, Golding associates the instinct of civilization with good and the instinct of savagery with evil.
Loss of Innocence
As the boys on the island progress from well-behaved, orderly children longing for rescue to cruel, bloodthirsty hunters who have no desire to return to civilization, they naturally lose the sense of innocence that they possessed at the beginning of the novel. Golding implies that civilization can mitigate but never wipe out the innate evil that exists within all human beings