How does rex walls convince people to hire him? what does this suggest about his character?

"as one of our outstanding historical figures once said, ‘when a great democracy is destroyed, it will not be because of enemies from without but rather because of enemies from within.’" (paragraph 7) how does this quote reveal mccarthy’s point of view and advance the purpose of his speech?

The physical injuries thaqt the narrator and other soldiers suffer in ernest hemingways in another country are reprsentative of

When you wear your earbuds while working out, your sweat damages them and they die sooner