Only the soul is unconquerable. What's the point of the author's quote of the song 'glory days'

Hello, my answer to your question is: The answer to the question of why the author quoted the song 'Glory Days' may vary according to the plot of the novel and the author's intention. In some novels, the author might quote the song 'Glorious Years' to express the protagonist's inner struggle or distrust of human nature. Doing so would allow the reader to feel the emotions and thoughts of the protagonist and enhance the appeal of the novel. Other novels might have some philosophical thinking, such as the idea expressed by the phrase 'only the soul is unconquerable.' Quoting the song 'Glorious Years' might allow readers to better understand this idea and better feel the meaning of the novel. In short, the specific meaning of the song 'Glory Days' could vary according to the plot of the novel and the author's intention.