The Diamond Age, written by Neal Stephenson, is a science fiction novel set in a future world where nanotechnology has transformed society. The story follows Nell, a young girl who receives a stolen interactive book called the Young Lady's Illustrated Primer. This advanced AI-driven book becomes Nell's guide and mentor, leading her on a journey of self-discovery and challenging societal norms. The Diamond Age explores themes of transhumanism, artificial intelligence, and the impact of technology on education and social structures.