Piggy's statement is a great example of foreshadowing in Lord of the Flies, revealing that the true threat on the island is the boys themselves. This theme ties back to Golding's larger theme presented by Simon when he shares his belief concerning the beast "that maybe it's only us" (89). The most dangerous beast on the island is the potential killer within each of the boys. As the novel progresses, Golding develops this idea further by having Jack and his hunters slip further into savagery and hedonism; the boys become savage killers. Piggy's quote rings prophetically true, hinting at the dangerously dark side of humanity; the people on the island are the worst threat imaginable.