49. Of Habits in General, As to Their Substance
50. Of the Subject of Habits
51. Of the Cause of Habits, As to Their Formation
52. Of the Increase of Habits
53. How Habits Are Corrupted or Diminished
54. Of the Distinction of Habits
55. Of the Virtues, As to Their Essence
56. Of the Subject of Virtue
57. Of the Intellectual Virtues
58. Of the Difference Between Moral and Intellectual Virtues
59. Of the Moral Virtues in Relation to the Passions
60. How the Moral Virtues Differ from One Another
61. Of the Cardinal Virtues
62. Of the Theological Virtues
63. Of the Cause of Virtues
64. Of the Mean of Virtue
65. Of the Connection of Virtues
66. Of Equality Among the Virtues
67. Of the Duration of Virtues After This Life
68. Of the Gifts
69. Of the Beatitudes
70. Of the Fruits of the Holy Ghost
71. Of Vice and Sin Considered in Themselves
72. Of the Distinction of Sins
73. Of the Comparison of One Sin with Another
74. Of the Subject of Sin
75. Of the Causes of Sin, in General
76. Of the Causes of Sin, in Particular
77. Of the Cause of Sin, on the Part of the Sensitive Appetite
78. Of That Cause of Sin Which Is Malice
79. Of the External Causes of Sin
80. Of the Cause of Sin, As Regards the Devil
81. Of the Cause of Sin, on the Part of Man
82. Of Original Sin, As to Its Essence
83. Of the Subject of Original Sin
84. Of the Cause of Sin, in Respect of One Sin Being the Cause
of Another
85. Of the Effects of Sin, and, First, of the Corruption of the
Good of Nature
86. Of the Stain of Sin
87. Of the Debt of Punishment
88. Of Venial and Mortal Sin
89. Of Venial Sin in Itself