179From the Definitions Given of Sin and Will, He Overthrows the Entire Heresy of the Manichæans.  Likewise from the Just Condemnation of Evil Souls It Follows that They are Evil Not by Nature But by Will.  That Souls are Good By Nature, to Which the Pardon of Sins is Granted. 182From Deliberation on the Evil and on the Good Part It Results that Two Classes of Souls are Not to Be Held to.  A Class of Souls Enticing to Shameful Deeds Having Been Conceded, It Does Not Follow that These are Evil by Nature, that the Others are Supreme Good. 184Again It is Shown from the Utility of Repenting that Souls are Not by Nature Evil.  So Sure a Demonstration is Not Contradicted Except from the Habit of Erring. 186He Prays for His Friends Whom He Has Had as Associates in Error. 187Acts or Disputation Against Fortunatus the Manichæan. 187Title Page. 188Disputation of the First Day. 198Disputation of the Second Day. 207Against the Epistle of Manichæus, Called Fundamental. 207Title Page. 208To Heal Heretics is Better Than to Destroy Them. 210Why the Manichæans Should Be More Gently Dealt with. 211Augustin Once a Manichæan. 212Proofs of the Catholic Faith. 213Against the Title of the Epistle of Manichæus. 215Why Manichæus Called Himself an Apostle of Christ. 216In What Sense the Followers of Manichæus Believe Him to Be the Holy Spirit. 217The Festival of the Birth-Day of Manichæus. 218When the Holy Spirit Was Sent. 220The Holy Spirit Twice Given. 221Manichæus Promises Truth, But Does Not Make Good His Word. 222The Wild Fancies of Manichæus.  The Battle Before the Constitution of the World. 223Two Opposite Substances.  The Kingdom of Light.  Manichæus Teaches Uncertainties Instead of Certainties. vii