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Summa Theologiae · I

First Part (Prima Pars)

Thomas Aquinas, Summa Theologiae. 119 questions, 584 articles.

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Text: Summa Theologiae, Project Gutenberg #17611, First Part (Prima Pars), translated by the Fathers of the English Dominican Province. The First Part of the Summa in the English Dominican translation (first printed 1911 to 1925; second and revised edition from 1920). A sample check on 2026-11-09 against pre-1931 printings at the Internet Archive (first printings of 1915 and 1916 and the second and revised edition of the 1920s) found that the article text matches, with no 1947 introduction, synopsis, or index. The phrase “From the Complete American Edition” in Gutenberg's catalog title is a provenance note only. Question and article numbers were added by the transcriber. Rights: Public domain (US)

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Questions

The Nature and Extent of Sacred Doctrine (10 articles)
The Existence of God (3 articles)
On the Simplicity of God (8 articles)
The Perfection of God (3 articles)
Of Goodness in General (6 articles)
The Goodness of God (4 articles)
The Infinity of God (4 articles)
The Existence of God in Things (4 articles)
The Immutability of God (2 articles)
The Eternity of God (6 articles)
The Unity of God (4 articles)
How God Is Known by Us (13 articles)
The Names of God (12 articles)
Of God's Knowledge (16 articles)
Of Ideas (3 articles)
Of Truth (8 articles)
Concerning Falsity (4 articles)
The Life of God (4 articles)
The Will of God (12 articles)
God's Love (4 articles)
The Justice and Mercy of God (4 articles)
The Providence of God (4 articles)
Of Predestination (8 articles)
The Book of Life (3 articles)
The Power of God (6 articles)
Of the Divine Beatitude (4 articles)

Treatise on the Most Holy Trinity

The Procession of the Divine Persons (5 articles)
The Divine Relations (4 articles)
The Divine Persons (4 articles)
The Plurality of Persons in God (4 articles)
Of What Belongs to the Unity or Plurality in God (4 articles)
The Knowledge of the Divine Persons (4 articles)
Of the Person of the Father (4 articles)
Of the Person of the Son (3 articles)
Of the Image (2 articles)
Of the Person of the Holy Ghost (4 articles)
Of the Name of the Holy Ghost--Love (2 articles)
Of the Name of the Holy Ghost, as Gift (2 articles)
Of the Persons in Relation to the Essence (8 articles)
Of the Persons as Compared to the Relations or Properties (4 articles)
Of the Persons in Reference to the Notional Acts (6 articles)
Of Equality and Likeness Among the Divine Persons (6 articles)
The Mission of the Divine Persons (8 articles)

Treatise on the Creation

The Procession of Creatures from God, and of the First Cause (4 articles)
The Mode of Emanation of Things from the First Principle (8 articles)
Of the Beginning of the Duration of Creatures (3 articles)
Of the Distinction of Things in General (3 articles)
The Distinction of Things in Particular (6 articles)
The Cause of Evil (3 articles)

Treatise on the Angels

Of the Substance of the Angels Absolutely Considered (5 articles)
Of the Angels in Comparison with Bodies (3 articles)
Of the Angels in Relation to Place (3 articles)
Of the Local Movement of the Angels (3 articles)
Of the Knowledge of the Angels (5 articles)
Of the Medium of the Angelic Knowledge (3 articles)
Of the Angels' Knowledge of Immaterial Things (3 articles)
Of the Angels' Knowledge of Material Things (5 articles)
Of the Mode of the Angelic Knowledge (7 articles)
The Will of the Angels (4 articles)
Of the Love or Dilection of the Angels (5 articles)
Of the Production of the Angels in the Order of Natural Being (4 articles)
Of the Perfection of the Angels in the Order of Grace and of (9 articles)
The Malice of the Angels with Regard to Sin (9 articles)
The Punishment of the Demons (4 articles)

Treatise on the Work of the Six Days

The Work of Creation of Corporeal Creatures (4 articles)
On the Order of Creation Towards Distinction (4 articles)
On the Work of Distinction in Itself (4 articles)
On the Work of the Second Day (4 articles)
On the Work of the Third Day (2 articles)
On the Work of Adornment, as Regards the Fourth Day (3 articles)
On the Work of the Fifth Day (1 article)
On the Work of the Sixth Day (1 article)
On the Things That Belong to the Seventh Day (3 articles)
On All the Seven Days in Common (3 articles)

Treatise on Man

Of Man Who Is Composed of a Spiritual and a Corporeal Substance: (7 articles)
Of the Union of Body and Soul (8 articles)
Of Those Things Which Belong to the Powers of the Soul in General (8 articles)
Of the Specific Powers of the Soul (4 articles)
Of the Intellectual Powers (13 articles)
Of the Appetitive Powers in General (2 articles)
Of the Power of Sensuality (3 articles)
Of the Will (5 articles)
Of Free-Will (4 articles)
How the Soul While United to the Body Understands Corporeal (8 articles)
Of the Mode and Order of Understanding (8 articles)
What Our Intellect Knows in Material Things (4 articles)
How the Intellectual Soul Knows Itself and All Within Itself (4 articles)
How the Human Soul Knows What Is Above Itself (3 articles)
Of the Knowledge of the Separated Soul (8 articles)
Of the First Production of Man's Soul (4 articles)
The Production of the First Man's Body (4 articles)
The Production of the Woman (4 articles)
The End or Term of the Production of Man (9 articles)
Of the State and Condition of the First Man as Regards His (4 articles)
Of Things Pertaining to the First Man's Will--Namely, Grace (4 articles)
Of the Mastership Belonging to Man in the State of Innocence (4 articles)
Of the Preservation of the Individual in the Primitive State (4 articles)
Of the Preservation of the Species (2 articles)
Of the Condition of the Offspring As to the Body (2 articles)
Of the Condition of the Offspring As Regards Righteousness (2 articles)
Of the Condition of the Offspring As Regards Knowledge (2 articles)
Of Man's Abode, Which Is Paradise (4 articles)

Treatise on the Conservation and Government of Creatures

Of the Government of Things in General (8 articles)
The Special Effects of the Divine Government (4 articles)
Of the Change of Creatures by God (8 articles)
How One Creature Moves Another (4 articles)
The Speech of the Angels (5 articles)
Of the Angelic Degrees of Hierarchies and Orders (8 articles)
The Ordering of the Bad Angels (4 articles)
How Angels Act on Bodies (4 articles)
The Action of the Angels on Man (4 articles)
The Mission of the Angels (4 articles)
Of the Guardianship of the Good Angels (8 articles)
Of the Assaults of the Demons (5 articles)
Of the Action of the Corporeal Creature (6 articles)
On Fate (4 articles)
Of Things Pertaining to the Action of Man (4 articles)
Of the Production of Man from Man As to the Soul (3 articles)
Of the Propagation of Man As to the Body (2 articles)

Also online, linked only: the same translation at New Advent and the Latin text at Corpus Thomisticum. Neither is copied here.

Source: Thomas Aquinas. Summa Theologica, First Part. Project Gutenberg #17611. Project Gutenberg record. Public domain in the USA. Outside the U.S., check local copyright rules. Project Gutenberg notices retained. The full Project Gutenberg license is kept in the hosted text.