Context helps. The author was a hardline conservative and it was written in the aftermath of WW2. A whole lot of Lord of the Flies is explained by the sort of person who serves in WW2 against the Nazis but considers themselves “of that sort of nature”, votes Tory, and attended a public school.

Lord of the Flies took all the same tired old boring mess of Hume and “The man in nature” and melded it with the abusive legacy of English schoolboys.