The book "Memoirs of the Duke de Saint-Simon. The era of Louis XIV, Regency, Louis XV" is an important historical document, which became the testimony of a famous figure of French society and politics of the 18th century, Duke Louis de Rouvrois. In his memoirs, he conveys the events and intrigues that took place at court during the reigns of Louis XIV and Louis XV, in particularly busy periods such as the regency. The authentic description of events, violation of culinary details, and disclosure of the life of the king himself, make this book extremely interesting for anyone interested in the history and culture of 18th century France.