In William Golding's Lord of the Flies there are many characters. Two of the most prominent and distinct characters are Piggy, and Jack Merridew. Both Jack and Piggy, are stubborn English boys of about 12 years old and symbolically represent groups of society and parts of the human thought, but Jack and Piggy's similarities end there. Jack is a physically healthy boy with little intellect who cannot think and rationalize too deeply, he represents anarchy and is the id of society whereas Piggy has little if no physical ability and can think and rationalize very well. Piggy represents the super-ego of the microcosm society/world. He is the voice of wisdom and guidance in the novel. The differences between Jack and Piggy are quite clear at the beginning of the novel and continue to develop and become more evident throughout the novel as Jack and Piggy react very differently to situations and problems that face them.
At the beginning of the book the differences in physical ability and fitness are distinct between Piggy and Jack. Piggy is very corpulent, hence the nickname Piggy. He can barely run and cannot swim because of his asthma and has been wearing glasses since he was three.
He tip-toed down the sandy side of the pool, and sat there up to his neck in water smiling proudly at Ralph. "Aren't you going to swim?- Piggy shook his head. "I can't swim. My asthma----.
In contrast, Jack is a tall thin boy who does not have any instruments to aid his senses. He does not have asthma and can swim and run freely. He, Ralph, and Simon are the ones who go exploring the island at the beginning. This is the same exploring trip that Ralph denies Piggy because he lacks the physical requirements and would only slow them down. Jack quickly develops the reputation of being a great hunter because of his stamina, his tracking ability, and because he succeeds in killing his prey. "Jack paused, cradling the conch, and turned to his hunters with their dirty black caps.