Learn exactly what happened in this chapter, scene, or section of The Sun Also Rises and what it means. The characters do not establish domestic lives for themselves. The generation of people who lived through World War I are often referred to as the Lost Generation. The romantic partners in The Sun Also Rises change suddenly and frequently. Perfect for acing essays, tests, and quizzes, as well as for writing lesson plans. Lives were devastated and old values were revealed as pointless in the wake of the war. The Sun Also Rises study guide contains a biography of Ernest Hemingway, literature essays, quiz questions, major themes, characters, and a full summary and analysis. The relationships are made and broken along the journey from country to country and, though marriage is sometimes mentioned, it is never actually attempted other than Cohn's disastrous and unhappy first marriage. A summary of Themes in Ernest Hemingway's The Sun Also Rises. Themes of The Sun Also Rises Important Themes. The Sun Also Rises is just jam-packed with people who think they have their public images worked out, but really are just big old messes on the inside.. Hemingway’s characters make a big show of being confident and witty, but we quickly realize that they’re just putting it on: nobody is really that confident, and nobody is entirely true to themselves. The Aimlessness of the Lost Generation.