Why is the quote "however Simon thought of the beast, there rose before his inward sight the picture of a human at once heroic and sick" an important quote in The Lord of the flies novel? (Chapter 6)

This is an interesting quote. Simon knew that the only "beast" on the island lay inside the human soul. Simon interprets humanity with the capacity for good and evil. Humans are capable of kindness but possess a sickness that draws them to darkness. It is a paradox that Simon struggles with throughout the novel.