"L'An 2440" is a utopian novel written by the French author Louis-Sébastien Mercier in 1770. The story is set in the year 2440 and presents a vision of a future society that has achieved significant advancements in technology, social organization, and human rights. The protagonist, M. de la Ville, travels to this future world and observes the improvements in living conditions, education, and governance. The novel critiques the social and political issues of Mercier's time, advocating for reforms and a more equitable society. It explores themes of progress, enlightenment, and the potential for humanity to evolve positively. "L'An 2440" is considered an early example of science fiction and utopian literature.