In chapter 11, Ralph, Piggy, Sam, and Eric go to Castle Rock to confront Jack and his followers and demand back the fire. They are the last remnants of reason on the island, and they analyze their situation. Ralph realizes that how they dress and present themselves is important. They need to show and behave as if they are not savages in order to convince the others to embrace reason and seriousness. The boys need to know there is a choice. Ralph says:
Supposing we go, looking like we used to, washed and hair brushed—after all we aren’t savages really and being rescued isn’t a game—
Ralph, who knows what they need to do to be rescued, appeals to Jack and his followers with a rational analysis of their situation. He is frustrated that their fire has been stolen when it is at the heart of what they need:
Your only hope is keeping a signal fire going as long as there’s light to see. Then maybe a ship’ll notice the smoke and come and rescue us and take us home.
Spirituality is dark, threatening, and aligned with evil on Castle Rock—and it is impervious to reason. The conch, the symbol of a certain kind of decency based in reason, is pitted against the "hatred" of a storm of sound made by the savage boys. Jack's boys are releasing a noise as primal as nature itself. An incantation is a magical spell meant to harness the power of the spirit world, and their sounds of hatred seem to cast a spell:
By him stood Piggy still holding out the talisman, the fragile, shining beauty of the shell. The storm of sound beat at them, an incantation of hatred.
Representing Jack's evil spirituality, we are presented with a picture of him arriving with two hunters. A dead sow, a symbol of evil like the sow's head on the stick surrounded by flies, accompanies them:
All three were masked in black and green. Behind them on the grass the headless and paunched body of a sow lay where they had dropped it.
Finally, as the chapter ends, Roger, the Christ figure in the novel, arrives carrying a different kind of spiritual authority:
Roger advanced upon them as one wielding a nameless authority.