Summa Theologica

The Summa Theologica (Latin: "Summary of Theology" or "Highest Theology") is the most famous work of Thomas Aquinas (1225–1274). It was intended as a manual for beginners as a compilation of all of the main theological teachings of the time. It summarizes the reasoning of all points of Christian theology, which before the Protestant Reformation subsisted solely in the Roman Catholic Church. The Summa's topics follow a cycle: the existence of God; God's creation, Man; Man's purpose; Christ; the Sacraments; and back to God. It is famous for its five arguments for the existence of God, the Quinquae viae (Latin: five ways). Throughout his work, Aquinas cites Augustine of Hippo, Aristotle, and other Christian, Jewish, Muslim and ancient pagan scholars.

FIRST PART
Question 1. The Nature and Extent of Sacred Doctrine (10 articles)
Question 2. The existence of God (3 articles)
Question 3. Of the Simplicity of God (8 articles)
Question 4. The Perfection of God (3 articles)
Question 5. Of Goodness in General (6 articles)
Question 6. The Goodness of God (4 articles)
Question 7. The Infinity of God (4 articles)
Question 8. The Existence of God in Things (4 articles)
Question 9. The Immutability of God (2 articles)
Question 10. The Eternity of God (6 articles)
Question 11. The Unity of God (4 articles)
Question 12. How God is known by Us (13 articles)
Question 13. The Names of God (12 articles)
Question 14. Of God's Knowledge (16 articles)
Question 15. Of Ideas (3 aricles)
Question 16. Of Truth (8 articles)
Question 17. Concerning Falsity (4 articles)
Question 18. The Life of God (4 articles)
Question 19. The Will of God (12 articles)
Question 20. God's Love (4 articles)
Question 21. The Justice and Mercy of God (4 articles)
Question 22. The Providence of God (4 articles)
Question 23. Of Predestination (4 articles)
Question 24. The Book of Life (3 articles)
Question 25. The Power of God (6 articles)
Question 26. The Divine Beatitude (4 articles)

TREATISE ON THE MOST HOLY TRINITY (QQ. 27-43)
Question 27. The Processions of the Divine Persons (5 articles)
Question 28. The Divine Relations (4 articles)
Question 29. The Divine Persons (4 articles)
Question 30. The Plurality of Persons In GOD (4 articles)
Question 31. What Belongs to the Unity or Plurality in God
(4 articles)
Question 32. The Knowledge of the Divine Persons (4 articles)
Question 33. Of the Person of the Father (4 articles)
Question 34. Of the Person of the Son (3 articles)
Question 35. Of the Image (2 articles)
Question 36. Of the Person of  the Holy Ghost (4 articles)
Question 37. Of the Name of the Holy Ghost Love (2 articles)
Question 38. Of the Name of the Holy Ghost, as Gift (2 articles)
Question 39. Of the Persons in Relation to the Essence
(8 articles)
Question 40. Of the Persons as Compared to the Relations or Properties (4 articles)
Question 41. Of the Persons in Reference to the Notional Acts
(6 articles)
Question 42. Of Equality and Likeness Among the Divine Persons (6 articles)
Question 43. The Mission of the Divine Persons (8 articles)

TREATISE ON THE CREATION (QQ 44-49)
Question 44. The Procession of Creatures from God, and of the First Cause of All Things (4 articles)
Question 45. The Mode of Emanation of Things From the First Principle. (8 articles)
Question 46. Of the Beginning of the Duration of Creatures
(3 articles)
Question 47. Of the Distinction of Things in General (3 articles)
Question 48. The Distinction of Things in Particular (6 articles)
Question 49. The Cause of Evil (3 articles)

TREATISE ONN THE ANGELS (QQ 50-64)
Question 50. On the Substance of the Angels Absolutely Considered (5 articles)
Question 51. Of the Angels in Comparison With Bodies
(3 articles)
Question 52. Of the Angels in Relation to Place (3 articles)
Question 53. Of the Local Movement of the Angels (3 articles)
Question 54. Of the Knowledge of the Angels (5 articles)
Question 55. Of the Medium of the Angelic Knowledge
(3 articles)
Question 56. Of the Angel's Knowledge of Immaterial Things
(3rticles)
Question 57. Of the Angel's Knowledge of Material Things
(5 articles)
Question 58. The Mode of Angelic Knowledge (7 articles)
Question 59. The Will of the Angels (4 articles)
Question 60. Of the Love or Dilection of the Angels (5 articles)
Question 61. Of the Production of the Angels in the Order of Natural Being (4 articles)
Question 62. Of the Perfection of the Angels in the Order of Grace and of Glory (9 articles) 
Question 63. The Malice of the Angels with Regard to Sin
(9 articles)
Question 64. The Punishment of the Demons (4 articles)

TREATISE ON THE WORK OF THE SIX DAYS (QQ. 65-74)
Question 65. The Work of Creation of Corporeal Creatures
(4 articles)
Question 66. On the Order of Creation Toward Distinction
(4 articles)
Question 67. On the Work of Distiction in Itself (4 articles)
Question 68. On the Work of the Second Day (4 articles)
Question 69. On the Work of the Third Day (2 articles)
Question 70. Of the Work of Adornment, as Regards the Fourth Day (3 articles)
Question 71. On the Work of the Fifth Day (1 article)
Question 72. On the Work of the Sixth Day (1 article)
Question 73. On the Things that Belong to the Seventh Day
(3 articles)
Question 74. On all the Seven Days in Common (3 articles)

TREATISE ON MAN (QQ. 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. (7 articles)
Question 76. Of the Union of Body and Soul (8 articles)
Question 77. Of those Things which Belong to the Powers of the Soul in General (8 articles)
Question 78. Of the Specific Powers of the Soul (4 articles)
Question 79. Of the Intellectual Powers. (13 articles)
Question 80. Of the Appetitive Powers in General (2 articles)
Question 81. Of the Power of Sensuality (3 articles)
Question 82. Of the Will (5 articles)
Question 83. Of Free-Will (4 articles)
Question 84. How the Soul While United to the Body Understands Corporeal Things Beneath it. (8 articles)
Question 85. Of the Mode and Order of Understanding
(8 articles)
Question 86. What our Intellect Knows in Material Things
(4 articles)
Question 87. How the Intellectual Soul Knows Itself and all Within Itself. (4 articles)
Question 88. How the Human Soul Knows What is Above Itself
(3 articles)
Question 89. Of the Knowledge of the Separated Soul (8 articles)
Question 90. Of the First Production of Man's Soul (4 articles:
Question 91. The Production of the First Man's Body (4 articles)
Question 92. The Production of the Woman (4 articles)
Question 93. The End or Term of the Production of Man
(9 articles)
Question 94. Of the State  and Condition of the first Man as Regards His Intellect (4 articles)
Question 95. Of things Pertaining to the First Man's Will -- Namely Grace and Righteousness (4 articles)
Question 96. Of the Mastership Belonging to Man in the State of Innocence (4 articles)
Question 97. Of the Preservation of the Individual in the Primitive State (4 articles
Question 98. Of the Preservation of the Species (2 articles)
Question 99. Of the Condition of the Offspring as to the body
(2 articles)
Question 100. Of the Condition of the Offspring as Regards Righteousness (2 articles)
Question 101. Of the Condition of the Offspring as Regards Knowledge (2 articles)
Question 102. Of Man's Abode, Which is Paradise (4 articles)

TREATISE ON THE CONSERVATION AND GOVERNMENT OF CREATURES (QQ. 103-119)
Question 103. Of the Government of Things in General
(8 articles)
Question 104. The Special Effects of the Divine Government
(4 articles)
Question 105. Of the Change of Creatures by God (8 articles) 
Question 106. How One Creature Moves Another (4 articles)
Question 107. The Speech of the Angels (5 articles)
Question 108. Of the Angelic Degrees of Hierarchies and Orders
(8 articles)
Question 109. The Ordering of the Bad Angels (4 articles)
Question 110. How Angels Act on Bodies (4 articles)
Question 111. The Action of Angels on Man (4 articles)
Question 112. The Mission of the Angels (4 articles)
Question 113. Of the Guardianship of the Good Angels
(8 articles)
Question 114. Of the Assaults of the Demons (5 articles)
Question 115. Of the Action of the Corporeal Creature (6 articles)
Question 116. On Fate (4 articles)
Question 117. Of Things Pertaining to the Action of Man
(4 articles)
Question 118. Of the Production of Man from Man as to the Soul
(3 articles)
Question 119. Of the Propagation of Man as to the Body
(2 articles)

THE SECOND PART ("Prima Secundae")
First Part of the Second Part (QQ. 1-114)
TREATISE ON THE LAST END (QQ. 1-5)