Thomas More remains one of the most enigmatic thinkers in history, due in large part to the enduring mysteries surrounding his best-known work, Utopia. He has been variously thought of as a reformer and a conservative, a civic humanist and a devout Christian, a proto-communist and a monarchical absolutist. His work spans contemporary disciplines from history to politics to literature, and his ideas have variously been taken up by seventeenth-century reformers and nineteenth-century communists.

Through a comprehensive treatment of More's writing, from his earliest poetry to his...