Travels into Several Remote Nations of the World. In Four Parts. By Lemuel Gulliver, First a Surgeon, and then a Captain of Several Ships, better known simply as Gulliver's Travels (1726, amended 1735), is a novel by Irish writer and clergyman Jonathan Swift, that is both a satire on human nature and a parody of the "travellers' tales" literary sub-genre. It is Swift's best known full-length work, and a classic of English literature. The book became popular as soon as it was published. John Gay wrote in a 1726 letter to Swift that "It is universally read, from the cabinet council to the nursery." [1] Since then, it has never been out of print. Cavehill in Belfast is thought to be the inspiration for the novel. Swift imagined that the mountain resembled the shape of a sleeping giant safeguarding the city. [2]