As the most influential apologetic work of the Western Church, the Summa contra Gentiles has shaped and defined theological and philosophical enquiry for hundreds of years. This vast work aims to establish the truth of the Christian religion by laying out a defense of the Christian faith from the perspective of both faith and reason. In doing so, Thomas Aquinas engages intelligent non-Christian thinkers in the clearest manner, and helps establish the method, purpose, and grounding for both theology and philosophy.

Thomas Aquinas stands among the most important thinkers in the history of Christianity, and his famous Summa Theologica represents the pinnacle of medieval theology and perhaps the most influential theological work in the history of Western Christianity. In the volumes of his writings we find the forerunners of every intellectual development in the eight centuries that followed, and the depth of his understanding of the nature and being of God has left a lasting mark on the enterprise of Christian theological reflection ever since. Logos is pleased to offer the English translation of the Summa Theologica by the Fathers of the English Dominican Province—the standard translation for Aquinas studies. This translation underlies the 22-volume edition published by Burns, Oates & Washbourne between 1912 and 1936, and has been widely reprinted throughout the twentieth century.

The Verbum 5 Legacy Libraries reintroduce the classic libraries of Verbum 5. This library is offered without features and datasets, making it the perfect standalone collection of resources to help grow your library with study Bible notes, Bible dictionaries, devotionals, and a few key commentaries. The Verbum 5 Starter Legacy Library provides essential resources for anyone just getting started with serious Bible study.

Thomas Aquinas stands among the most important thinkers in the history of Christianity, and his famous Summa Theologica represents the pinnacle of medieval theology and perhaps the most influential theological work in the history of Western Christianity. In the volumes of his writings we find the forerunners of every intellectual development in the eight centuries that followed, and the depth of his understanding of the nature and being of God has left a lasting mark on the enterprise of Christian theological reflection ever since.

The Verbum 6 Legacy Libraries reintroduce the classic libraries of Verbum 6. This library is offered without features and datasets, making it the perfect standalone collection of resources to help grow your library with study Bible notes, Bible dictionaries, devotionals, and a few key commentaries. The Verbum 6 Starter Legacy Library provides essential resources for anyone just getting started with serious Bible study.

The Verbum 5 Legacy Libraries reintroduce the classic libraries of Verbum 5. This library is offered without features and datasets, making it the perfect standalone collection of resources to help grow your library with practical commentary sets and even includes a few key texts to get you started with basic Greek and Hebrew study.

The Verbum 6 Legacy Libraries reintroduce the classic libraries of Verbum 6. This library is offered without features and datasets, making it the perfect standalone collection of resources to help grow your library with practical commentary sets and even includes a few key texts to get you started with basic Greek and Hebrew study.

Examine 25 centuries of philosophy with over 150 enhanced and searchable volumes. Go deeper in your philosophical investigations, studying words, making notes that sync across devices, and seeing ideas in historical context with Logos’ smart research tools.

Francis Thompson made some impact on the literary world during his life, but his literary prowess was most fully recognized after his death. This collection contains his entire body of work, including pen and ink illustrations for The Hound of Heaven. This shining light of Christian intellect and non-traditional devotional fervor left a small and impactful collection of poems and prose. His relationship to the church is ever present in his spiritual and observational writings. Take a journey into the mind of a poet who was daily reminded of God’s pursuit of his soul.

The Verbum 5 Legacy Libraries reintroduce the classic libraries of Verbum 5. This library is offered without features and datasets, making it the perfect standalone collection of resources to help grow your library, including advanced reference works and original language materials.

Thomas Aquinas stands among the most important thinkers in Christendom. In his writings we find the source of every intellectual development in the eight centuries following his life, especially on the nature and being of God. A theologian, philosopher, saint, and Doctor of the Church, the works of the “Angelic Doctor” are an essential foundation for understanding perhaps every topic in theology from the past 800 years.

The study and research tools in Logos Bible Software are sometimes only as good as the library that comes with them. The larger your library, the more effective you can be in your study of the Bible. Whether you are working with the Factbook, Passage Guide or the Exegetical Guide, the resources in your library, commentaries, grammars, dictionaries, and reference works, are the fuel that drive all the best features in Logos Bible Software. With over fifteen hundred reference works, Master Feature Collection gives you everything you need to make the most of your sermon writing, bible study, exegesis, and research.

The Logos 5 Lutheran Legacy Libraries reintroduce the classic Lutheran libraries of Logos 5. This library is offered without features and datasets, making it the perfect standalone collection of resources to help grow your library, including advanced reference works and original language materials.

The Reformed Portfolio library makes your study of the Bible easier by connecting your entire library of books to a robust set of study tools. The Reformed Portfolio Library takes everything in the Reformed Diamond Library and adds even more to your library. The Reformed Portfolio LIbrary contains key sets including Tyndale Commentaries | TOTC/TNTC (47 vols.), Barth’s Church Dogmatics (31 vols.), The Works of Jonathan Edwards (41 vols.), Pillar New Testament Commentary | PNTC (17 vols.), and many more. The Reformed Portfolio Library is excellent for academic research or advanced exegesis.

The Theology Guide collects and displays key information related to all the major topics in systematic theology, including a brief introduction to each topic, and links directly to every systematic theology in Logos. Get the Theology Guide Feature Expansion, L for your library to give this powerful tool even more resources to search. To get started in researching any of the major topics in systematic theology, run the Theology Guide and use it to gather information about a theological topic from your library. This collection includes everything in the Theology Guide Feature Expansion, M as well more than twenty additional resources to help expand your studies.

The resources included in the Systematic Theology Collection works in conjunction with the Systematic Theology Cross-References Dataset to bring these resources to the Passage Guide. Study a passage, and the Systematic Theologies section reports where your systematic theologies refer to the verse, and further organizes them by denomination and category of systematic study. Whether the verse is used in section reporting soteriological beliefs or in the prolegomena, you’ll see before digging in. And with so many systematic theologies for Logos to search through, you’ll never miss a verses’ use in theological proof in any denomination.

The Doctors of the Church are the most reliable and authoritative teachers of the Faith for all Christians (not just Catholics). The Catholic Church, to date, has named 36 men and women as Doctors of the Church. “Doctor” essentially means teacher and each of the Doctors is noteworthy for their outstanding, clear teaching of the Faith, as well as their holiness. These 143 volumes represent 35 of the 36 Doctors and draw from every major Patristic series we offer, including the Fathers of the Church Series, Ancient Christian Writers, Popular Patristics series, and the Classics of Western Spirituality.

The Logos 6 Legacy Libraries reintroduce the classic libraries of Logos 6. This library is offered without features and datasets, making it the perfect standalone collection of resources to help grow your library, including academic reference works and original language resources.

Verbum 10 facilita su estudio católico al conectar toda su biblioteca de libros a un sólido conjunto de herramientas digitales. Y Verbum 10 Oro ofrece una completa biblioteca de estudios católicos con más de 540 recursos. Oro no solo incluye todas las herramientas de estudio que hemos creado, sino que también viene con un sinnúmero de comentarios. Tendrá todos los recursos que necesita para un estudio serio de las Escrituras junto con obras teológicas como Sacramentum Mundi (6 vols.), Navarre Bible, Standard Edition (19 vols.) y otros recursos ideales para la preparación de homilías o estudios más avanzados de las Escrituras.

The Verbum 6 Legacy Libraries reintroduce the classic libraries of Verbum 6. This library is offered without features and datasets, making it the perfect standalone collection of resources to help grow your library, including advanced reference works and original language materials.

The Logos 5 Reformed Legacy Libraries reintroduce the classic Reformed libraries of Logos 5. This library is offered without features and datasets, making it the perfect standalone collection of resources to help grow your library, including academic reference works and original language resources.

Systematic Theologies Collection works together in conjunction with the Systematic Theology Cross-References Dataset to bring these resources to the Passage Guide. Study a passage, and the Systematic Theologies section reports where your systematic theologies refer to the verse, and further organizes them by denomination and category of systematic study. Whether the verse is used in section reporting soteriological beliefs or in the prolegomena, you’ll see before digging in. And with so many systematic theologies for Logos to search through, you’ll never miss a verses’ use in theological proof in any denomination.

The Logos 6 Legacy Libraries reintroduce the classic libraries of Logos 6. This library is offered without features and datasets, making it the perfect standalone collection of resources to help grow your library, including academic reference works and original language resources.

Our largest package, the 2025 Ultimate Library, provides an incredible library for biblical research and theological reflection. Whether focused on Church history or biblical exegesis, the vast collection of resources and titles at your fingertips cover the gamut—from most devotionals to practical discussions of pastoral ministry to the most rigorous scholarly and academic research. This package has everything you need to engage in the serious study of Scripture and its world, with respected resources like the Library of Hebrew Bible/Old Testament Studies | LHBOTS (382 vols.) and top-tier exegetical commentaries like the New International Commentary on the Old and New Testament | NIC (51 vols.).

Verbum 10 facilita tu estudio católico al conectar toda tu biblioteca de libros a un sólido conjunto de herramientas digitales. Con más de 240 recursos, Verbum 10 Académico te proporciona una base sólida para estudiar las Escrituras en los idiomas originales. Esta biblioteca no solo incluye todas las herramientas de estudio que hemos creado en español, sino que también viene con un sinnúmero de comentarios. Tendrás todos los recursos que necesitas para un estudio serio de las Escrituras incluyendo más de 10 Biblias en español e inglés, los Comentarios a la nueva Biblia de Jerusalén (21 vols.), la Navarre Bible, Standard Edition (19 vols.) y otros recursos ideales para estudios avanzados de las Escrituras.

The Logos 5 Legacy Libraries reintroduce the classic libraries of Logos 5. This library is offered without features and datasets, making it the perfect standalone collection of resources to help grow your library, including academic reference works and original language resources.

The Logos 5 Reformed Legacy Libraries reintroduce the classic Reformed libraries of Logos 5. This library is offered without features and datasets, making it the perfect standalone collection of resources to help grow your library commentaries, theological dictionaries, and other resources ideal for sermon prep or more advanced Bible study.

The Verbum 6 Legacy Libraries reintroduce the classic libraries of Verbum 6. This library is offered without features and datasets, making it the perfect standalone collection of resources to help grow your library commentaries, theological dictionaries, and other resources ideal for sermon prep or more advanced Bible study.

The Logos 5 Lutheran Legacy Libraries reintroduce the classic Lutheran libraries of Logos 5. This library is offered without features and datasets, making it the perfect standalone collection of resources to help grow your library commentaries, theological dictionaries, and other resources ideal for sermon prep or more advanced Bible study.

This collection of theology resources is curated to cover the wide spectrum of theological studies, including Biblical, Doctrinal, and Systematic Theology. Bringing together hundreds of theology resources from a wide array of views, this collection will enhance your results in the Factbook, Passage Guide, Theology Guide, and more.