William of Ockham (c. 1285-c. 1347) was the most eminent and influential theologian and philosopher of his day, a giant in the history of political thought. He was a Franciscan friar who came to believe that the Avignonese papacy of John XXII had set out to destroy the religious ideal on which the Franciscan order was based: the complete poverty of Christ and the apostles. This is the first complete text by Ockham to be published in English. The Short...