Simon and Ralph have been attempting to build lean-tos for shelter from the elements while Jack is gone out hunting. Ralph's primary concern is for keeping the fire going, in order to have a rescue signal as well as for warmth and to keep wild animals at bay, in addition to building shelters. Jack cares more about hunting for meat to eat. Eventually his desire to hunt manifests itself in a pure thirst for killing. Ralph symbolizes order and civilization, Jack chaos and the natural world of kill or be killed. Ralph's reproach of Jack in Chapter 3 foreshadows the future struggle between the two boys for control of the band of boys.