Authors

Christian theologians and authors — two thousand years of thought

Browse the authors represented on TheoSumma by era. Each has a dedicated AI expert, primary-source citations, and recommended reading.

Patristic (1st–8th century)

Ignatius of AntiochAthanasiusBasil the GreatGregory of NyssaJohn ChrysostomAugustineMaximus the Confessor

Medieval (9th–15th century)

Anselm of CanterburyBernard of ClairvauxThomas AquinasBonaventureGregory PalamasMeister EckhartCatherine of Siena

Reformation & early modern (16th–17th)

Martin LutherJohn CalvinRichard HookerJohn of the CrossTeresa of ÁvilaBlaise PascalJohn Owen

Modern (18th–20th century)

Jonathan EdwardsJohn Henry NewmanKarl BarthDietrich BonhoefferC.S. LewisHans Urs von BalthasarJoseph Ratzinger

Contemporary (late 20th–21st)

Stanley HauerwasN.T. WrightRowan WilliamsKallistos WareAlexander SchmemannDavid Bentley Hart

Looking for a specific thinker?

Every author has their own page, recommended reading list, and AI expert. Full per-author pages are rolling out now; new authors are added weekly based on user requests. Email [email protected] to nominate someone.

Frequently asked questions

Which theologians are covered?
Over thirty figures from the patristic era (Athanasius, Augustine, John Chrysostom) through the medieval doctors (Anselm, Aquinas, Bonaventure), the Reformers (Luther, Calvin), and modern voices (Newman, Barth, von Balthasar, C.S. Lewis, N.T. Wright). Each has a dedicated Christian AI expert and an annotated bibliography.
Is the AI reading the actual works?
Yes. Each expert's knowledge base is anchored to the primary corpus of that theologian — critical editions where available, with paragraph-level citations so you can verify every claim against the source.
Can I use these responses in academic writing?
Cite the primary sources TheoSumma surfaces, not the Christian AI itself. The expert agents are a research tool for discovering and interpreting texts — academic citation belongs to the original author and edition.
Are living theologians represented?
Yes — several contemporary authors are included (N.T. Wright, Rowan Williams, Kallistos Ware, David Bentley Hart, Stanley Hauerwas). Living authors are represented with the portion of their published corpus that is licensed for research use.
How do you decide which authors to add?
A mix of canonical importance (standard theology syllabi across traditions), user requests, and the availability of a clean primary corpus. Suggestions from pastors, scholars, and lay readers drive the roadmap — every nomination gets read.
Are the authors from all Christian traditions?
Yes. Catholic (Aquinas, Bonaventure, Newman, Ratzinger), Orthodox (Maximus, Palamas, Schmemann, Ware), Reformed (Calvin, Owen, Edwards, Barth), Lutheran (Luther), Anglican (Hooker, Lewis, Williams), and Evangelical voices are all represented. The list keeps growing.
Can I read a theologian I disagree with?
Yes, and you should. Every author on TheoSumma is presented in their own voice, not filtered through an editor. Disagreeing well requires understanding first — that is exactly what the Christian AI expert makes possible.
Where can I read the primary texts alongside TheoSumma?
The AI supplies citations with edition and paragraph references. From there, critical editions in your language are available through standard library channels, university presses, and open-access editions of public-domain works. Check a good theological library or your local seminary.
Can I compare two authors on one question?
Yes. Use the Arena feature to run the same prompt through two experts side by side — 'Augustine vs. Pelagius on grace,' 'Aquinas vs. Scotus on predestination,' 'Luther vs. Erasmus on free will.' Useful for essays, classes, and honest self-examination.
Is it free?
Yes. The free plan gives you access to every author expert, with a daily quota. Paid plans raise the quota and unlock the Expert model for sustained reading in a single author.