Theologian · Medieval
Peter Lombard
c. 1096–1160 · Early scholasticism
Bishop of Paris; Master of the Sentences. His Trinitarian doctrine was vindicated against Joachim at Lateran IV (1215).
Peter Lombard's Four Books of Sentences gathered the teaching of Scripture and the Fathers on God, creation, Christ and the sacraments into one ordered textbook. It became the set text of every medieval theology faculty, commented on by Thomas, Bonaventure, Scotus, Ockham and Luther, and it fixed the number of the sacraments at seven.
Why he matters: He gave scholastic theology its syllabus. Lateran IV defended his Trinitarian theology by name, and his sacramental definitions passed into the Church's teaching.
Where to be careful
A few of his opinions were later abandoned by the schools (his “Christological nihilism” and his identification of charity with the Holy Spirit), none of them censured in his lifetime.
Reading
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The Sentences, Book IV: On the Doctrine of SignsPeter Lombard (trans. Giulio Silano) · The sacramental book, the most influential of the four.
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Peter LombardPhilipp W. Rosemann · A concise introduction (Great Medieval Thinkers).
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The Sentences, Book I: The Mystery of the TrinityPeter Lombard (trans. Giulio Silano) · The Trinitarian doctrine Lateran IV defended.
Documented positions
Where this thinker stands on each dispute the test covers.