Lumen Gentium: Chapters I and II
Lumen Gentium
Second Vatican Council
The full English text of Chapters I and II of the Dogmatic Constitution on the Church: The Mystery of the Church and On the People of God (paragraphs 1–17).
Every Monday
Magisterium Monday
A simple home for the materials used in each lesson: readings, PDFs, charts, and interactive quizzes.
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Council of Trent: Original Sin and Justification
Concilium Tridentinum — Sessiones V et VI
Council of Trent
Fresh English translations from the enacted Latin of Trent's decree on original sin, decree on justification, and all thirty-three canons on justification.
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Magnifica Humanitas
Magnifica Humanitas
Pope Leo XIV
Leo XIV's encyclical on safeguarding the human person in the age of artificial intelligence — the dignity of the person and the five principles of Catholic social teaching, read between the images of Babel and Nehemiah.
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Aeterni Patris
Aeterni Patris
Pope Leo XIII
Leo XIII's charter of the modern Thomistic revival: philosophy as the servant of faith, the patristic and Scholastic witnesses, and the call to restore the wisdom of St. Thomas Aquinas.
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On the Principles of Nature
De Principiis Naturae
St. Thomas Aquinas
Lesson materials for St. Thomas's early treatise on matter, form, privation, the four causes, act and potency, and the order of the categories.