They also represent the logic, the social structure structure and order that is needed on the island .
Glasses are a symbol of intellignce and a clear mind .
The glasses are used to slove the boys problems , the most important being the lighting of the fire , which we know was the boys only chance of being recued . Piggy , himself represents the superego of the boys personalities . The fire and smoke represents the last and aparently only hope of being rescued . It represents the old life the boys had in England , the moral influence it had upon them . By lighting the fire Ralph and Piggy are clinging to their old life .