Below are two interesting excerpts from a General Audience (December 30^th, 2009) of Benedict XVI reflecting on the life and work of Peter Lombard.  In this audience Benedict highlights several aspects of The Lombard’s famous work, The Sentences, which are particularly important contributions to the history of theology.

Like all theology teachers of his time, Peter also wrote discourses and commentaries on Sacred Scripture. His masterpiece, however, consists of the four Books of the Sentences. This is a text which came into being for didactic purposes. According to the theological method in use in those times, it was necessary first of all to know, study and comment on the thought of the Fathers of the Church and of the other writers deemed authoritative. Peter therefore collected a very considerable amount of documentation, which consisted mainly of the teachings of the great Latin Fathers, especially St Augustine, and was open to the contribution of contemporary theologians. Among other things, he also used an encyclopedia of Greek theology which had only recently become known to the West: The Orthodox faith, composed by St John Damascene. The great merit of Peter Lombard is to have organized all the material that he had collected and chosen with care, in a systematic and harmonious framework. In fact one of the features of theology is to organize the patrimony of faith in a unitive and orderly way. Thus he distributed the sentences, that is, the Patristic sources on various arguments, in four books. In the first book he addresses God and the Trinitarian mystery; in the second, the work of the Creation, sin and Grace; in the third, the Mystery of the Incarnation and the work of Redemption with an extensive exposition on the virtues. The fourth book is dedicated to the sacraments and to the last realities, those of eternal life, or Novissimi. The overall view presented includes almost all the truths of the Catholic faith. The concise, clear vision and clear, orderly schematic and ever consistent presentation explain the extraordinary success of Peter Lombard’s Sentences. They enabled students to learn reliably and gave the educators and teachers who used them plenty of room for acquiring deeper knowledge. A Franciscan theologian, Alexandre of Hales, of the next generation, introduced into the Sentences a division that facilitated their study and consultation. Even the greatest of the 13th-century theologians, Albert the Great, Bonaventure of Bagnoregio and Thomas Aquinas began their academic activity by commenting on the four books of Peter Lombard’s Sentences, enriching them with their reflections. Lombard’s text was the book in use at all schools of theology until the 16th century.

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Among the most important contributions offered by Peter Lombard to the history of theology, I would like to recall his treatise on the sacraments, of which he gave what I would call a definitive definition: “precisely what is a sign of God’s grace and a visible form of invisible grace, in such a way that it bears its image and is its cause is called a sacrament in the proper sense” (4, 1, 4). With this definition Peter Lombard grasps the essence of the sacraments: they are a cause of grace, they are truly able to communicate divine life. Successive theologians never again departed from this vision and were also to use the distinction between the material and the formal element introduced by the “Master of the Sentences”, as Peter Lombard was known. The material element is the tangible visible reality, the formal element consists of the words spoken by the minister. For a complete and valid celebration of the sacraments both are essential: matter, the reality with which the Lord visibly touches us and the word that conveys the spiritual significance. In Baptism, for example, the material element is the water that is poured on the head of the child and the formal element is the formula: “I baptize you in the name of the Father, of the Son and of the Holy Spirit”. Peter the Lombard, moreover, explained that the sacraments alone objectively transmit divine grace and they are seven: Baptism, the Eucharist, Penance, the Unction of the sick, Orders and Matrimony (cf. Sentences 4, 2, 1).