I. Is Prayer an Act of the Appetitive Powers? Cardinal Cajetan, On Prayer based on Friendship II. Is it Fitting to Pray? Cardinal Cajetan, On Prayer as a True Cause S. Augustine, _On the Sermon on the Mount_, II. iii. 14 " _On the Gift of Perseverance_, vii. 15 III. Is Prayer an Act of the Virtue of Religion? Cardinal Cajetan, On the Humility of Prayer S. Augustine, _On Psalm_ cii. 10 " _Of the Gift of Perseverance_, xvi. 39 IV. Ought We to Pray to God Alone? S. Augustine, _Sermon_, cxxvii. 2 V. Should We in our Prayers ask for anything Definite from God? S. Augustine, _De Catechizandis Rudibus_, xxv. 47 " _Confessions_, X. xxix. " _Confessions_, XI. ii. 2 VI. Ought We in our Prayers to ask for Temporal Things from God? S. Augustine, _On Psalm_ xxxvii. 10 " _Confessions_, I. xx. 2 " _Confessions_, IX. iv. 12 S. Thomas is miraculously relieved from Toothache S. Augustine, _Sermon_, lxxx. 7 " _Sermon_, cccliv. 8 VII. Ought We to Pray for Others? VIII. Ought We to Pray for our Enemies? S. Augustine, _Sermon_, xv., on _Psalm_ xxv. 8 IX. On the Seven Petitions of the Lord's Prayer Cardinal Cajetan, On the Grouping of these Petitions S. Augustine, _Confessions_, VII. x. 2 " _Sermon_, lvii., _on S. Matt._ vi. 7 " _Sermon_, lvi. 9, _on S. Matt._ vi. " _Sermon_, lvi. 8, _on S. Matt._ vi. " _Of the City of God_, xix. 27 S. Thomas's Rhythm, _Adoro Te Devote_ X. Is Prayer Peculiar to Rational Creatures? XI. Do the Saints in Heaven Pray for Us? Cardinal Cajetan, On the Saints in Limbo XII. Should Prayer be Vocal? Cardinal Cajetan, On the Conditions of Vocal Prayer S. Augustine, _Confessions_, IX. iv. 8 " _Confessions_, X. xxxiii. 50 " _On Psalm_ cxviii., _Sermon_ xxix. 1 XIII. Must Prayer necessarily be Attentive? Cardinal Cajetan, On the Varieties of Attention at Prayer S. Augustine, _On Psalm_ lxxxv. 7 " _On Psalm_ cxlv. 1 S. Thomas, _On Distractions, Com. on 1 Cor._ xiv. 14 XIV. Should our Prayers be Long? XV. Is Prayer Meritorious? S. Augustine, _On Psalm_ xxvi. " _Ep._ cxxx. _ad Probam._ XVI. Do Sinners gain Anything from God by their Prayers? XVII. Can We rightly term "Supplications," "Prayers," "Intercessions," and "Thanksgivings," parts of Prayer? Cardinal Cajetan, On the Prayer of the Consecration S. Augustine, _Of Divers Questions_, iv. I Is Prayer an Act of the Appetitive Powers? S. Isidore says[98]: "To pray is the same thing as to speak." Speaking, however, belongs to the intellect. Hence prayer is not an act of the appetitive, but of the intellectual faculties.