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Summa Theologica · St. Thomas Aquinas
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General Instruction of the Roman Missal
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Humanae Vitae
Laudato Si'
Veritatis Splendor
Rerum Novarum
Fides et Ratio
Deus Caritas Est
Spe Salvi
Evangelii Gaudium
Pacem in Terris
Quadragesimo Anno
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Dei Verbum
Lumen Gentium
Council of Trent: Canons and Decrees
Philosophy
Confessions · St. Augustine
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The Gospel of John
Begin with the most theological Gospel
Summa Theologica
Aquinas on the existence of God
Genesis
In the beginning
Confessions
Augustine's spiritual autobiography
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