Philotheus Boehner, OFM, born Heinrich Boehner (February 17, 1901—May 22, 1955) was one of the most distinguished medieval scholars of the twentieth century. Boehner was born Heinrich Boehner on February 17, 1901, in Lichtenau, Westphalia. He entered the Franciscan Order in 1920, and was given the name Philotheus, the Latin form of the Greek Philotheos, (“friend of God”). In 1927 he was ordained as a priest, although he was so ill with tuberculosis he was not expected to live. While resting, he began his work as a medieval scholar by translating Etienne Gilson’s work on St. Bonaventure. He became a close friend of Gilson in the 1930s. In the summer of 1940 Boehner moved to St. Bonaventure College (now, St. Bonaventure University) where he lectured on Franciscan philosophy, and it was here that he began to build the Franciscan Institute into a center of international Franciscan scholarship. As a result of his work and influence, a large output of scholarly publications were issued from the Franciscan Institute (more than thirty volumes from 1944–55, divided into five series—Philosophy, Theology, Texts, History and Missiology). Probably his most enduring work is the critical edition of William of Ockham’s Opera omnia theologica et philosophica, which he produced with Professor Ernest Moody. Other publications of Boehner’s at Franciscan Institute Publications include Collected Articles on Ockham (1992, with Eligius Buytaert, OFM), Itinerarium Mentis in Deum (2002, with Zachary Hayes, OFM) and De Puritate Artis Logicae Tractatus Longior (1955, critical edition).
Zachary Hayes, OFM, is a noted Franciscan friar, theologian and academic. He earned his PhD. in theology at Friedrich Wilhelm University in Bonn, Germany. He became a full-time member of the faculty at Catholic Theological Union in Chicago in 1968. He served on the summer faculty at St. Bonaventure University and he was a visiting professor at St. John’s Seminary, Brighton, MA., Lutheran School of Theology in Chicago, the Divinity School of the University of Chicago, the Franciscan School of Theology in Berkeley, California, the University of Notre Dame, and the Chicago Center for Religion and Science sponsored by the Lutheran School of Theology. He is widely regarded as one of the leading interpreters of St. Bonaventure. He is the author of many books, including Saint Bonaventure’s Disputed Questions on the Mystery of the Trinity, Saint Bonaventure’s Disputed Questions on the Knowledge of Christ, The Hidden Center: Spirituality and Speculative Christology in St. Bonaventure and numerous articles.