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Simon does not like or enjoy speaking up in the assembly. Golding characterizes Simon as feeling a "perilous necessity to speak" as the boys' collective fear of the beast took over the assembly (88-89). Even though Simon feels as though he ought to say something, he hesitates, because "to speak in assembly was a terrible thing to him" (89). Golding's dialogue as Simon tries to explain himself is broken and disjointed, conveying the boys' nervousness, as if he cannot convey the meaning of his thoughts into spoken words.
Simon has great insight and is the only boy on the island to understand the true nature of the beast, but his fear of speaking overcomes him. He cannot make the other boys comprehend the importance of his message. Unfortunately, they discard his contribution as being "nuts" (89).