The Diamond Age is a science fiction novel written by Neal Stephenson. Set in a future where nanotechnology has transformed society, the story follows a young girl named Nell who receives a stolen copy of a highly advanced interactive book called the Young Lady's Illustrated Primer. The book serves as Nell's guide and mentor, leading her on a journey of self-discovery and adventure. The Diamond Age is a thought-provoking and imaginative tale that explores themes of education, artificial intelligence, and the impact of technology on society.