I have looked up the words in bold in a dictionary, yet I am still at a loss as to what they mean. Could anyone please help on this?
In its naive way, the Tarzan legend returens us to that Eden where, free of clothes and the inhibitions of an oppressive society, a man can achieve in reverie his continuing need, which is, as William Faulkner put it in his high Confederate style, to prevail as well as endure.
The society forces us to behave in certain ways. We have to wear clothes, say "thank you", "I'm sorry" and "hello" even if we don't feel like it, and get up at 6 a.m. The writer says that Tarzan is free of all that, and we are too, in a sense, when we are reading the book.
William Faulkner lived in the American South. He wasn't born yet when the Confederate States of America ceased to exist, but he lived in the area that once was part of the state, and he used a high (lofty) style characteristic to that area.