Gulliver's Travels is a novel of satire and adventure which has four main sections, called "books," divided into chapters. Preceding the first book is a message from the publisher, Richard Sympson. It claims that Lemuel Gulliver is a real person known to Sympson. This message is followed by a letter to Sympson from Gulliver. Each of these prolegomena is a fabrication, of course—the work of Swift's mischievous mind—designed to enhance the realistic characteristics of his fictional narrator. Educated adults generally read the book as a satire on current events and social, cultural, religious political trends. Children generally read the book as an adventure story.