When we first meet him, Eragon is a simple farm boy, scratching out a living in a forgotten corner of his world. When we say good-bye to him at the end of the novel, he's transformed into a full-fledged Dragon Rider. The bulk of Eragon is about the journey he takes to make that transformation and assume the power and responsibility that he's inherited. At the end of the book, his newfound maturity can be seen as the climax, or turning point, of his story. No more turnips for this guy. He may have come into the story a boy, but he rides off on Saphira as a man.