69. PREFACE - If the efficiency of prayer was proportionate to its length, then the longest ones would be reserved for the most guilty, because they are in more need than those who have lived saintly lives. To refuse prayer to criminals is to Lack charity towards them and to be unaware of the mercy of God. To believe they would be useless because a man has committed this or that grove crime would be to prejudge the Almighty's justice (See chapter 11, item 14).