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Aquinas Institute Opera Omnia Project: Summa Theologiae (10 vols.)

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The most important work of the towering intellectual of the Middle Ages, Thomas Aquinas’s Summa Theologiae remains one of the great seminal works of philosophy and theology, while extending to subjects as diverse as law and government, sacraments and liturgy, and psychology and ethics. The Aquinas Institute is therefore proud to announce the publication of the Summa Theologiae in a bilingual edition with Latin and English in parallel columns.

Please note that these ten volumes will display as two separate resources in your digital library.

  • Includes Latin text and English translation
  • Features English text based on the translation of the Fathers of the English Dominican Province, edited and corrected by the Institute’s faculty and staff
  • Presents a seminal work of philosophy and theology
  • Summa Theologiae Prima Pars, 1-49
  • Summa Theologiae Prima Pars, 50-119
  • Summa Theologiae Prima Secundae, 1-70
  • Summa Theologiae Prima Secundae, 71-114
  • Summa Theologiae Secunda Secundae, 1-91
  • Summa Theologiae Secunda Secundae, 92-189
  • Summa Theologiae Tertia Pars, 1-59
  • Summa Theologiae Tertia Pars, 60-90
  • Summa Theologiae Supplementum 1-68
  • Summa Theologiae Supplementum 69-99

Thomas Aquinas entered the Benedictine abbey of Montecassino at the age of five to begin his studies. He was transferred to the University of Naples at age 16, where he became acquainted with the revival of Aristotle and the Order of the Dominicans. Aquinas went on to study in Cologne in 1244 and Paris in 1245. He then returned to Cologne in 1248, where he became a lecturer.

Aquinas’ career as a theologian took him all over Europe. In addition to regularly lecturing and teaching in cities throughout Europe, Aquinas participated regularly in public life and advised both kings and popes. Thomas Aquinas also profoundly influenced the history of Protestantism. He wrote prolifically on the relationship between faith and reason, as well as the theological and philosophical issues which defined the Reformation.

Thomas Aquinas is most well-known for his monumental works Summa Theologica and Summa contra Gentiles


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  1. Bede



    As far as I can tell, this is the same translation and Latin as Interestingly, the Latin of this version has English for the Question and Article headings and lacks the cross-references under the Article titles. I can't comment on how much it's been 'updated and corrected' because I've only had a brief look at it. The only thing I've noticed is that where the older version has the letter J, which Latin doesn't have, this version has the letter I. If you can get this in a library package, as I did, it's okay, but I'm not sure I'd pay for this one over the older version.
  2. Thomas Toews

    Thomas Toews


    How does this differ from How extensive is the updated and corrected translation?
  3. Timothée



    I see it is still marked as "pre-order". Do we know when it might be published and accessible?


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