 The book is Fontenelle's most famous work and is considered to be one of the first major works of the Age of Enlightenment.Unlike many scientific works of its time, "Conversations on the Plurality of Worlds" was written not in Latin, but in French and is notable as one of the first books to attempt an explanation of scientific theories in popular language.In the preface, Fontenelle addresses female readers and suggests that the offered explanation should be easily understood even by those without scientific knowledge.