The novel is written in the form of letters exchanged between the various characters, and it provides a colorful and lively depiction of life in the 18th century, with a focus on social customs, manners, and attitudes. The characters in the novel are used to satirize various aspects of British society, including the upper classes, the medical profession, the legal system, and more. Smollett's vivid descriptions of the landscapes and cities visited by the characters, as well as his sharp-witted commentary, have helped to make "The Expedition of Humphry Clinker" a beloved classic of English literature. Despite its age, the novel remains relevant and entertaining, and continues to be widely read and studied by literary enthusiasts and scholars.