This document provides biographical information about Jonathan Swift and summaries the major works and themes in his book "Gulliver's Travels". It notes that Swift was born in Ireland in 1667 to an English father and Irish mother. It describes the four voyages in Gulliver's Travels where Gulliver visits Lilliputians, the giants in Brobdingnag, the flying island of Laputa, and the rational horses called Houyhnhnms. Each voyage satirizes aspects of human society, politics, science, and morality through comparisons with the different peoples and cultures Gulliver encounters.