Brave New World is a dystopian social science fiction novel by English author Aldous Huxley, written in 1931 and published in 1932. Largely set in a futuristic World State, whose citizens are environmentally engineered into an intelligence-based social hierarchy, the novel anticipates huge scientific advancements in reproductive technology, sleep-learning, psychological manipulation, and classical conditioning that are combined to make a dystopian society that is challenged by only a single individual: the story's protagonist.