"The Citizen of the World" is a series of fictional letters written by the fictional Chinese philosopher Lien Chi Altangi, who is visiting London in the mid-18th century. The letters are written in a satirical and witty style and offer a unique perspective on English society and culture from the point of view of an outsider. Through Altangi's observations and reflections, the book explores a range of themes, including politics, religion, education, gender roles, and social customs. It also provides insight into the author's own views on these topics and his critique of contemporary English society. "The Citizen of the World" is an entertaining and thought-provoking work that continues to be widely read and admired for its literary and cultural significance.