What is the allagory in Lord of the Flies?

that civilization plays a huge role in society and power,desire,temptation, and our inner savage would rule us otherwise. every character symbolizes something: jack -evil.ralph-good.piggy-science and knowledge.roger-murder.littuns-followers. simon-innocence,knowledge,truth. and the conch represents civilization and power. the glasses represent help because that's what starts the fire and the fire itself is hope.