The idea of the Beast can also be understood as propaganda used by Jack to attain a totalitarian government.
By scaring the boys by telling them that the Beast exists, and by accusing Ralph of doing a poor job of protecting the children, Jack achieves leadership of a new ‘tribe’ in which he will rule like a tyrant.
When Ralph blows the shell to remind the boys of civilization, they throw rocks at him and, finally, civilization comes to an abrupt end when the shell is destroyed. They symbolize the exercise of intellect and science, since it is with them that the boys are able to start a fire.
Piggy’s glasses can also be seen as the window that views and recognizes good from evil.
While these three represent the goodness existing in humanity, Jack and Roger symbolize evil.
Jack shows the power-hungry and savage end of society while Roger represents brutality and bloodlust.Piggy represents the voice of reason in civilization; his cleverness and brains are qualities that prove his intellect.Simon represents the purity and natural goodness existing in humanity.However, as the boys slowly turn to their savage instincts, the power of the conch shell is eroded.Ralph is holding the shell while he laughs maniacally about Simon’s death.In the novel, the stick and the skull (the physical manifestation of the Lord the Flies), is circumambulated by flies, signifying the worship of evil.The Lord of the Flies states that he lives within all human beings.This statement symbolizes that Satan is within all humanity, including English boys, and that it is he that causes sinful and savage behaviour. The boys paint their faces with mud and other such materials.This shows the level of savagery they have reached, and their return to primal human instincts.As long as the fire continues burning, it suggests not only that the boys want to return to society, but also that they are still using their intellectual capacity.However, in the end, it is a wild fire that results in the rescue of the remaining children.