Thomas More's Utopia is one of the supreme achievements of Renaissance humanism. His complex and ironic account of an imaginary communist society has not only given rise to the genre of utopian fiction but has been an inspiration to generations of political reformers. The present edition differs from other English-language editions in that it includes all the ancillary materials that were included, at More's behest, in the early editions (encompassing letters and poems on Utopia by More and several of his humanist associates), in that it presents a new version of the highly-regarded translation by Robert M. Adams, and in that its introductory materials and annotations assimilate important recent scholarship.