Thomas's Commentary on the Book of Causes, composed during the first half of 1272, offers an extended view of his approach to Neoplatonic thought and functions as a guide to his metaphysics. Though long neglected and, until now, never translated into English, it deserves an equal place alongside his commentaries on Aristotle and Boethius. In addition to the extensive annotation, bibliography, and thorough introduction, this translation is accompanied by two valuable appendices. The first provides a translation of another version of proposition 29 of the Book of Causes, which was not known to St. Thomas. The second lists citations of the Book of Causes found in the works of St. Thomas and cross-references these to a list showing the works, and the exact location within them, where the citations can be found.

The Sentences of Peter Lombard was the standard theological text from the twelfth through the fifteenth century (and even well beyond that in some places); producing a commentary on it was the equivalent of a doctoral dissertation, since it qualified the commentator to teach at the university level. Accordingly, all of the famous medieval scholastics, from Alexander of Hales to John Duns Scotus to William of Ockham, produced their own commentaries on the Sentences. Appearing for the first time in English, this volume features a bilingual Latin-English edition of Aquinas' first major work, the Commentary on the Sentences of Peter Lombard.

George Herbert (1593-1633) was an Anglican priest, poet and essayist--truly one of the most profound spiritual masters in the English tradition. His spirituality was a synthesis of Evangelical and Catholic piety.