Who said "I am not Piggy. I am Simon."?

This quote is attributed to Simon.

I am not Piggy. I am Simon. - Simon

"I am not Piggy. I am Simon."

Simon

Character in Lord of the Flies

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"Perhaps there is a beast."

"Evil is part of human nature."

"Maybe the beast is part of us."

"What I mean is... maybe it's some sort of animal."