Ralph does not always respect Piggy's intelligence or his loyalty to him, but Piggy always serves as a symbol of rational thinking and scientific knowledge. It is Piggy who recognizes the value and power of the conch as a symbol of unity and order. Piggy's glasses serves as the source for fire--both to cook the food and keep the all-important signal fire going. Only Piggy is able to see the obvious solution to the signal fire's close proximity to the beast; he simply suggests that they move the new fire to the beach, far from the fearful beast. Piggy recognizes the need for immediate shelter from the elements. He tries to persuade the boys to think and act like the grown-ups, and that there are no ghosts or supernatural beasts. He suggests using sticks to create a sundial so they can determine the time of the day. He points out to Ralph that Jack's hatred for the leader is deep and never-ending.