“maybe it's only us.”
Context: During an assembly about the beast, Simon haltingly suggests its true nature.
Analysis
The tentative "maybe" and the simple pronoun "us" deliver the novel's key insight in plain, almost childlike language: the beast is not external but within the boys themselves. Simon alone perceives that the real evil is human nature, not a monster on the mountain. Golding frames Simon as a prophet whose truth the others are too frightened to accept.
Language Techniques:
Exam Tip
The central quote for the theme of the beast as innate human evil. Link it to Ralph's closing realisation of "the darkness of man's heart" — Simon understood it long before.