Castle Rock

1. Ralph acusses Jack of being a beast and a theif because he is acting savegery and he stole Piggy's glasses and the fire. This, and the fight they had, may show a shred of civilization because when someone steal something from another person the civilized response is to be angry but then to confront that person. And although fighting isn't necessarily civilized, it is something that civilized people do sometimes in order to let out their anger and stress 

2. Ralph becomes more savage because he, first brought spears when confronting Jack and his tribe which was not necessary. Secondly Ralph fought back after Piggy told him to stop and to remember what they came for (their fire and Piggy's glasses, not for blood). Later Piggy stops the fight by getting killed by a boulder that is let out by Roger. After he died and his body was taken by the sea, everyone was almost in shock and scared of what my become of them and stopped fighting out of fear. 

3. In chapter 11 William Goulding is trying to show that over time even the most civilized people become broken and confused when being are isolated by their civilized societies over time. Ralph and Piggy both have the same morals regarding getting home and returning to their organized communities, but in this scene they are both changing. Ralph is following the reaccuring mob mentality by using a spear, putting his hair up, and almost admiring the new look of Jack's tribe. And Piggy is exploding in his own head, he yearns for rules and civilization and since he is not getting what he wants he trying to create it himself. By doing this he is only killing himself, literally, because everyone else had already forgot about their pasts. In the end Goulding is warning his readers that whether you remember your morals or stray away from them, either way you are stuck and will continue to fall deeper and deeper into the hole of the reality in isolation.