Piggy is important to the book The Lord of the Flies, because he represents an educated, logical, rule-following society. He is one of the first supporters of the need for a chief, and recognizes the symbolic importance of the conch shell. While Piggy doesn't vote for Ralph as the leader (he voted for Jack), Piggy throws his full support behind Ralph. A vote was taken, Ralph won; therefore, Piggy will follow his decisions.
"Which is better—to have rules and agree, or to hunt and kill?"
Golding illustrates Piggy's representation of an educated, logical society with his glasses. Again, early in the story, the boys are struggling with lighting a fire. It is Piggy that suggests and demonstrates how his glasses can be used to focus sunlight to create fire. Another piece that Golding uses to illustrate Piggy's education is the conch shell mentioned earlier. Piggy not only recognizes its importance to a leader, but is the only person who knows what it is at first, and how to use it. I like how Piggy knows how to use it, but chooses not to use it. It shows that he is wise enough to understand that the other boys on the island would never accept him as their leader (more than likely because of his physical appearance).