The Diamond Age is a science fiction novel written by Neal Stephenson. Set in a future world where nanotechnology has advanced to the point where it can create highly advanced materials and devices, 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. As Nell navigates through a society divided by class and technology, she becomes entangled in a larger conflict that could change the course of civilization. The Diamond Age explores themes of artificial intelligence, education, and the impact of technology on society.