Saint Thomas Aquinas (1225-1274)

Summa Theologiae

Translated by Fathers of the English Dominican Province

Table of Contents

First Part

• Treatise on Sacred Doctrine (Question 1)
  • Question 1: The Nature and Extent of Sacred Doctrine
  
  
• Treatise on the One God (Questions 2-26)
  • Question 2: The Existence of God
  • Question 3: Of the Simplicity of God
  • Question 4: The Perfection of God
  • Question 5: Of Goodness in General
  • Question 6: The Goodness of God
  • Question 7: The Infinity of God
  • Question 8: The Existence of God in Things
  • Question 9: The Immutability of God
  • Question 10: The Eternity of God
  • Question 11: The Unity of God
  • Question 12: How God Is Known by Us
  • Question 13: The Names of God
  • Question 14: Of God’s Knowledge
  • Question 15: Of Ideas
  • Question 16: Of Truth
  • Question 17: Concerning Falsity
  • Question 18: The Life of God
  • Question 19: The Will of God
  • Question 20: God’s Love
  • Question 21: The Justice and Mercy of God
  • Question 22: The Providence of God
  • Question 23: Of Predestination
  • Question 24: The Book of Life
  • Question 25: The Power of God
  • Question 26: Of the Divine Beatitude
  
  
• Treatise on the Blessed Trinity (Questions 27-43)
  • Question 27: The Procession of the Divine Persons
  • Question 28: The Divine Relations
  • Question 29: The Divine Persons
  • Question 30: The Plurality of Persons in God
  • Question 31: Of What Belongs to the Unity or Plurality in God
  • Question 32: The Knowledge of the Divine Persons
  • Question 33: Of the Person of the Father
  • Question 34: Of the Person of the Son
  • Question 35: Of the Image
  • Question 36: Of the Person of the Holy Ghost
  • Question 37: Of the Name of the Holy Ghost—Love
  • Question 38: Of the Name of the Holy Ghost, As Gift
  • Question 39: Of the Persons in Relation to the Essence
  • Question 40: Of the Persons As Compared to the Relations or Properties
  • Question 41: Of the Persons in Reference to the Notional Acts
  • Question 42: Of Equality and Likeness among the Divine Persons
  • Question 43: The Mission of the Divine Persons
  
  
• Treatise on Creation (Questions 44-49)
  • Question 44: The Procession of Creatures from God, and of the First Cause of All Things
  • Question 45: The Mode of Emanation of Things from the First Principle
  • Question 46: Of the Beginning of the Duration of Creatures
  • Question 47: Of the Distinction of Things in General
  • Question 48: The Distinction of Things in Particular
  • Question 49: The Cause of Evil
  
  
• Treatise on the Angels (Questions 50-64)
  • Question 50: Of the Substance of the Angels Absolutely Considered
  • Question 51: Of the Angels in Comparison with Bodies
  • Question 52: Of the Angels in Relation to Place
  • Question 53: Of the Local Movement of the Angels
  • Question 54: Of the Knowledge of the Angels
  • Question 55: Of the Medium of the Angelic Knowledge
  • Question 56: Of the Angel’s Knowledge of Immaterial Things
  • Question 57: Of the Angel’s Knowledge of Material Things
  • Question 58: Of the Mode of Angelic Knowledge
  • Question 59: The Will of the Angels
  • Question 60: Of the Love or Dilection of the Angels
  • Question 61: Of the Production of the Angels in the Order of Natural Being
  • Question 62: Of the Perfection of the Angels in the Order of Grace and of Glory
  • Question 63: The Malice of the Angels with Regard to Sin
  • Question 64: The Punishment of the Demons
  
  
• Treatise on the Work of the Six Days (Questions 65-74)
  • Question 65: The Work of Creation of Corporeal Creatures
  • Question 66: On the Order of Creation Towards Distinction
  • Question 67: On the Work of Distinction in Itself
  • Question 68: On the Work of the Second Day
  • Question 69: On the Work of the Third Day
  • Question 70: Of the Work of Adornment, As Regards the Fourth Day
  • Question 71: On the Work of the Fifth Day
  • Question 72: On the Work of the Sixth Day
  • Question 73: On the Things That Belong to the Seventh Day
  • Question 74: On All the Seven Days in Common
  
  
• Treatise on Man (Questions 75-102)
  • Question 75: Of Man Who Is Composed of a Spiritual and a Corporeal Substance: and in the First Place, Concerning What Belongs to the Essence of the Soul
  • Question 76: Of the Union of Body and Soul
  • Question 77: Of Those Things Which Belong to the Powers of the Soul in General
  • Question 78: Of the Specific Powers of the Soul
  • Question 79: Of the Intellectual Powers
  • Question 80: Of the Appetitive Powers in General
  • Question 81: Of the Power of Sensuality
  • Question 82: Of the Will
  • Question 83: Of Free-Will
  • Question 84: How the Soul While United to the Body Understands Corporeal Things Beneath It
  • Question 85: Of the Mode and Order of Understanding
  • Question 86: What Our Intellect Knows in Material Things
  • Question 87: How the Intellectual Soul Knows Itself and All within Itself
  • Question 88: How the Human Soul Knows What Is above Itself
  • Question 89: Of the Knowledge of the Separated Soul
  • Question 90: Of the First Production of Man’s Soul
  • Question 91: The Production of the First Man’s Body
  • Question 92: The Production of the Woman
  • Question 93: The End or Term of the Production of Man
  • Question 94: Of the State and Condition of the First Man as Regards His Intellect
  • Question 95: Of Things Pertaining to the First Man’s Will—Namely, Grace and Righteousness
  • Question 96: Of the Mastership Belonging to Man in the State of Innocence
  • Question 97: Of the Preservation of the Individual in the Primitive State
  • Question 98: Of the Preservation of the Species
  • Question 99: Of the Condition of the Offspring As to the Body
  • Question 100: Of the Condition of the Offspring As Regards Righteousness
  • Question 101: Of the Condition of the Offspring As Regards Knowledge
  • Question 102: Of Man’s Abode, Which Is Paradise
  
  
• Treatise on the Government of Creatures (Questions 103-119)
  • Question 103: Of the Government of Things in General
  • Question 104: The Special Effects of the Divine Government
  • Question 105: Of the Change of Creatures by God
  • Question 106: How One Creature Moves Another
  • Question 107: The Speech of the Angels
  • Question 108: Of the Angelic Degrees of Hierarchies and Orders
  • Question 109: The Ordering of the Bad Angels
  • Question 110: How Angels Act on Bodies
  • Question 111: The Action of the Angels on Man
  • Question 112: The Mission of the Angels
  • Question 113: Of the Guardianship of the Good Angels
  • Question 114: Of the Assaults of the Demons
  • Question 115: Of the Action of the Corporeal Creature
  • Question 116: On Fate
  • Question 117: Of Things Pertaining to the Action of Man
  • Question 118: Of the Production of Man from Man as to the Soul
  • Question 119: Of the Propagation of Man as to the Body

First Part of the Second Part

• Treatise on Man’s Last End (Questions 1-5)
  • Question 1: Of Man’s Last End
  • Question 2: Of Those Things in Which Man’s Happiness Consists
  • Question 3: What Is Happiness
  • Question 4: Of Those Things That Are Required for Happiness
  • Question 5: Of the Attainment of Happiness
  
  
• Treatise on Human Acts (Questions 6-21)
  • Question 6: Of the Voluntary and the Involuntary
  • Question 7: Of the Circumstances of Human Acts
  • Question 8: Of the Will, in Regard to What It Wills
  • Question 9: Of That Which Moves the Will
  • Question 10: Of the Manner in Which the Will Is Moved
  • Question 11: Of Enjoyment [or, Fruition], Which Is an Act of the Will
  • Question 12: Of Intention
  • Question 13: Of Choice, Which Is an Act of The Will with Regard to the Means
  • Question 14: Of Counsel, Which Precedes Choice
  • Question 15: Of Consent, Which Is an Act of the Will in Regard to the Means
  • Question 16: Of Use, Which Is an Act of the Will in Regard to the Means
  • Question 17: Of the Acts Commanded by the Will
  • Question 18: Of the Good and Evil of Human Acts, in General
  • Question 19: Of the Goodness and Malice of the Interior Act of the Will
  • Question 20: Of Goodness and Malice in External Human Actions
  • Question 21: Of the Consequences of Human Actions by Reason of Their Goodness and Malice
  
  
• Treatise on Passions (Questions 22-48)
  • Question 22: Of the Subject of the Soul’s Passions
  • Question 23: How the Passions Differ from One Another
  • Question 24: Of Good and Evil in the Passions of the Soul
  • Question 25: Of the Order of the Passions to One Another
  • Question 26: Of the Passions of the Soul in Particular: and First, of Love
  • Question 27: Of the Cause of Love
  • Question 28: Of the Effects of Love
  • Question 29: Of Hatred
  • Question 30: Of Concupiscence
  • Question 31: Of Delight Considered in Itself
  • Question 32: Of the Cause of Pleasure
  • Question 33: Of the Effects of Pleasure
  • Question 34: Of the Goodness and Malice of Pleasures
  • Question 35: Of Pain or Sorrow, in Itself
  • Question 36: Of the Causes of Sorrow or Pain
  • Question 37: Of the Effects of Sorrow or Pain
  • Question 38: Of the Remedies of Sorrow or Pain
  • Question 39: Of the Goodness and Malice of Sorrow or Pain
  • Question 40: Of the Irascible Passions, and First, of Hope and Despair
  • Question 41: Of Fear, in Itself
  • Question 42: Of the Object of Fear
  • Question 43: Of the Cause of Fear
  • Question 44: Of the Effects of Fear
  • Question 45: Of Daring
  • Question 46: Of Anger, in Itself
  • Question 47: Of the Cause That Provokes Anger, and of the Remedies of Anger
  • Question 48: Of the Effects of Anger
  
  
• Treatise on Habits (Questions 49-54)
  • Question 49: Of Habits in General, As to Their Substance
  • Question 50: Of the Subject of Habits
  • Question 51: Of the Cause of Habits, As to Their Formation
  • Question 52: Of the Increase of Habits
  • Question 53: How Habits Are Corrupted or Diminished
  • Question 54: Of the Distinction of Habits
  
  
• Treatise on Virtue (Questions 55-70)
  • Question 55: Of the Virtues, As to Their Essence
  • Question 56: Of the Subject of Virtue
  • Question 57: Of the Intellectual Virtues
  • Question 58: Of the Difference between Moral and Intellectual Virtues
  • Question 59: Of Moral Virtue in Relation to the Passions
  • Question 60: How the Moral Virtues Differ from One Another
  • Question 61: Of the Cardinal Virtues
  • Question 62: Of the Theological Virtues
  • Question 63: Of the Cause of Virtues
  • Question 64: Of the Mean of Virtue
  • Question 65: Of the Connection of Virtues
  • Question 66: Of Equality among the Virtues
  • Question 67: Of the Duration of Virtues after This Life
  • Question 68: Of the Gifts
  • Question 69: Of the Beatitudes
  • Question 70: Of the Fruits of the Holy Ghost
  
  
• Treatise on Vice and Sin (Questions 71-89) (forthcoming)
  
  
• Treatise on Law (Questions 90-108) (forthcoming)
  
  
• Treatise on Grace (Questions 109-114) (forthcoming)
  
  

Second Part of the Second Part (forthcoming)

Third Part (forthcoming)

Supplement to the Third Part (forthcoming)

Catalogue of Titles

First Part Question 1