John Wyclif (d. 1384) was among the leading schoolmen of fourteenth-century Europe. He was an outspoken controversialist and critic of the Church, and, in his last days at Oxford, the author of the greatest heresy that England had known. This volume offers new translations of a representative selection of his Latin writings on theology, the Church and the Christian life. It provides a comprehensive view of the life of this charismatic but irascible medieval theologian, and of the development of the most prominent dissenting mind in pre-Reformation England. This collection will be of interest to undergraduate and graduate students of medieval history, historical theology and religious heresy, as well as scholars in the field.