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Over the centuries, the Catholic Church regularly and consistently reaffirmed the central importance of Thomas's work for understanding its teachings concerning Christian revelation.
Translated works available in the library: An Aquinas Reader, pp. 178 - 185. Translated by Mary T. Clark. A First Glance at St. Thomas Aquinas: a handbook for peeping Thomists, pp. 49 - 56. Translated by Ralph McInerny. Text in Latin can be found in the Leonine edition of Opera Omnia, vol. 43, pp. 49-89.
Aquinas On Being and Essence. Translated by Joseph Bobik; Concerning Being and Essence. Translated by George G. Leckie; On being and Essence. Translated by Timothy McDermott. Available in Thomas Aquinas: selected philosophical writings, pp. 90 -113; On Being and Essence. Translated by Ralph McInerny in Thomas Aquinas: Selected Writings, pp. 30 - 49. Translated by Ralph McInerny; On being and Essence. Translated with an introd. and notes by Armand Maurer Text in Latin can be found in the Leonine edition of Opera Omnia, vol. 43, pp. 315-381.
Translated works available in the library: Aquinas on Matter and Form and the Elements. Translated by Joseph Bobik; Text in Latin can be found in the Parma edition of Opera Omnia, v. 16, p. 353. Text in Latin can be found in the Leonine edition of Opera Omnia, vol. 43, pp. 131-157.
Other titles: De substantiis separatis ad fratrem Reginaldum socium suum; De Substantiis Separatis seu de Angelorum Natura. Treatise on Separate Substances. Based on tvelve mediaeval manuscripts by Francis J. Lescoe;Text in Latin can be found in the Leonine edition of Opera Omnia, vol. 40 D.
Translated works available in the library: The Trinity and The Unicity of the Intellect. Translated by Sister Rose Emmanuella Brennan. Aquinas Against the Averroists: on there being only one intellect; Translated by Ralph McInerny. Text in Latin can be found in the Leonine edition of Opera Omnia, vol. 43, pp. 243-314.
English Editions from Ouscula Theologica
De Articulis Fideie by The catechetical instructions of St. Thomas Aquinas; translated with a commentary by Rev. Joseph B. Collins, introd. by Rev. Rudolph G. Bandas.
Full title: De articulis Fidei et Ecclesiae Sacramentis ad Archiepiscopum Panormitanum. The Catechetical Instructions of St. Thomas Aquinas, pp. 119 - 131. Translated with a commentary by Rev. Joseph B. Collins with introduction by Rev. Rudolph G. Bandas; Text in Latin can be found in the Leonine edition of Opera Omnia, vol. 42, pp. 207-257.
Definition of oposculle: [Latin opusculum, diminutive of opus, work; see opus.]
Full title: Compendium Theologiae seu Brevis Compilatio Theologiae ad Fratrem Raynaldum. Compendium of Theology. Translated by Cyril Vollert; Also Compendium of Theology. Translated by Richard J. Regan; Text in Latin can be found in the Leonine edition of Opera Omnia, vol. 42, pp. 2 - 205.
Ad Ducissam Brabantiae (rescripta) by De regimine principum ad regem Cypri et De regimine Judaeorm ad Ducissam Brabantiae; politica opuscula duo ad fidem optimarum editionum diligenter recusa Joseph Mathis curante.
Full title: Epistola ad ducissam Brabantiae. Other titles: Epistola ad Comitissam Flandriae. It is believed by many this letter was likely written in 1271, not to the “Duchess of Brabant” (as many historians, and even the Leonine editors thought), but rather to Margaret, Countess of Flanders, who had a great interest in the Dominican Order, and likely knew Thomas directly. On the Government of Jews in Aquinas. Translated by J. G. Dawson in Aquinas: Selected Political Writings , pp. 84 – 95; Text in Latin can be found in the Leonine edition of Opera Omnia, vol. 42, pp. 357-378.
Translated by Peter Fehlner in Ending the Byzantine Greek Schism: Containing the 14th c. "Apologia" of Demetrios Kydones for Unity with Rome; Text in Latin can be found in the Leonine edition of Opera Omnia, vol. 40 A.
De Emptione (rescripta) by [find in the Summa]
Full title: De Emptione et Venditione ad Tempus. Translated works available in the library: The Pocket Aquinas: selections from the writings of St. Thomas, pp. 223-225. Edited and translated by Vernon J. Bourke; Text in Latin can be found in the Leonine edition of Opera Omnia, vol. 42 pp. 379-394.
Translated works available in the library: Aquinas on Matter and Form and the Elements. Translated by Joseph Bobik; Text in Latin can be found in the Parma edition of Opera Omnia, v. 16, p. 353. Text in Latin can be found in the Leonine edition of Opera Omnia, vol. 43, pp. 131-157.
Saint Thomas Aquinas on the Movement of the Heart. Translation is available in the following work: Journal of the History of Medicine, vol. 15, pp. 22–30. Text in Latin can be found in the Leonine edition of Opera Omnia, vol. 43, pp. 91-130.
Full title: De Operationibus Occultis Naturae ad Quendam Militem Ultramontanum. Othe titles: De Occultis Operationibus Naturae. Translated works available in the library: The letter of Saint Thomas Aquinas, De Occultis Operibus Naturae ad Quemdam Militem Ultramontanum. Translated by Joseph Bernard McAllister; Text in Latin can be found in the Leonine edition of Opera Omnia, vol. 43, pp. 159-186.
De Regno ad Regem Cypri (rescripta) by On kingship, to the King of Cyprus, done into English by Gerald B. Phelan (under the title On the govenance of rulers) Rev. with introd. and notes by I. Th. Eschmann.
Other titles: De regimine principum; De regimine principum ad Regem Cypri. On Kingship, to the King of Cyprus. Translated by Gerald B. Phelan; Text in Latin can be found in the Leonine edition of Opera Omnia, vol. 42, pp. 417-471.
Translated works available int he library: How to Study: being the letter of St. Thomas Aquinas to brother John, De Modo Studendi. Translated by Victor White. Contains English and Latin.
Translated works available in the library: Aquinas on Matter and Form and the Elements. Translated by Joseph Bobik; Text in Latin can be found in the Parma edition of Opera Omnia, v. 16, p. 353. Text in Latin can be found in the Leonine edition of Opera Omnia, vol. 43, pp. 131-157.
De regimine principum ad regem Cypri et De regimine Judaeorm ad Ducissam Brabantiae; politica opuscula duo ad fidem optimarum editionum diligenter recusa Joseph Mathis curante.
Translated works available in the library: The Trinity and The Unicity of the Intellect. Translated by Sister Rose Emmanuella Brennan. Aquinas Against the Averroists: on there being only one intellect; Translated by Ralph McInerny. Text in Latin can be found in the Leonine edition of Opera Omnia, vol. 43, pp. 243-314.
Ad Ducissam Brabantiae (rescripta) by De regimine principum ad regem Cypri et De regimine Judaeorm ad Ducissam Brabantiae; politica opuscula duo ad fidem optimarum editionum diligenter recusa Joseph Mathis curante.