Simon, Ralph, Piggy, Jack, all are the characters of a novel “Lord of Flies”, written by William Golding.
In which, all of the boys except Ralph and Simon (and jack) behaving like they are adjusting to their new life, they are running wildly, following older boys.
Golding is telling us about human nature that there must be rules in a society to follow, otherwise society would fail.
Ralph, Simon and piggy are determined and hardworking, while other boys seem to lack of these qualities. Like Ralph has quality to hunt and Jack has the quality to make shelters.