Every archival journey has its moments of mystery. One of those dropped in my lap this week. Late last year, one of the Thalbach library volumes was digitized (yay!), and made its way to my attention thanks to a very helpful librarian. (Andrea Kollinger of the Germanisches Nationalmuseum is my “thank you” of the week!)
The volume itself has now entered my “to-do” stack, but as a curious nerd, I did have to open the digital link and glance at the volume to see what state it was in.
And, happily for me, it had paste-down flyleaves – some old folio something-or-other in dense Latin with all those chewy abbreviations that allow for efficient text rendition, if not always the most fluent reading.
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| Front Flyleaf, GNM 22273 |
The type is the dense, angular Gothic used in many incunable theological folios – compact, heavily abbreviated, and clearly meant for readers already fluent in the conventions of scholastic Latin.
Okay, I love a challenge. And it’s spring break, so I can play with my material if I want to, right? And so I launched a journey of more hours than it should have been.
A few words jumped out at me immediately: scandalum, peccatum, ignorans. Clearly in the theology orbit. But what theology, and from where?
This kind of work is always a mixture of frustrating and tantalizing. As you can see from the image, the page was trimmed down – just half the folio sheet – and parts of the first column had been effaced at some point in the book’s journey. So one winds up with fragments of a fragment to work from, and a chance to practice one’s transcription skills.
A quick flip to the back fly showed more of the same.
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| Back Flyleaf, GNM 22273 |
Still two columns, no helpful headers (sigh), no big paragraph marks or drop caps or other orientation marks. Well, there’s that marginal “E.” So, probably two fragments from the same folio book, and some kind of marginal reference system. (It took me an embarrassingly long time to notice the I/J in the margin of the front fly. I was distracted by the Latin.)
The text was organized as a scholastic discussion: questions introduced with phrases like An autem… and Dubitat secundo…, followed by tightly argued distinctions. Elsewhere the text referred to examples from Scripture – including the familiar Pauline warning about food that might cause a weaker Christian to stumble.
All of that pointed toward a very specific intellectual world: the dense, systematic moral theology taught in late-medieval universities and religious orders. The fragment clearly belonged to a large theological folio, the kind of book used for teaching and preaching rather than private devotion. But which one?
That question turned out to be the beginning of a small detective story.
DETERMINING CONTENT
The first step with a fragment like this is simply to slow down and read what survives. Even when the page is incomplete, scholastic texts tend to give themselves away through their habits: recurring vocabulary, familiar examples, and the logical scaffolding of argument.
In this case, several phrases began to stand out as I worked through the abbreviations. The text discussed “scandalum activum” and “scandalum passivum”, distinguishing between the act of leading another person into sin and the act of taking scandal from something done by another. It cited the Pauline warning: “Si propter cibum frater tuus contristatur, iam non secundum caritatem ambulas” – if your brother is grieved because of food, you are no longer walking according to charity. There was also the classic example about eating meat sacrificed to idols in front of weaker Christians.
If that sounds familiar, it should. These are standard examples in the medieval theological discussion of scandal, a topic that runs through the moral theology tradition descending from Thomas Aquinas. The fragment also asked a question about ignorance – “Cum omissio sciendi sit peccatum…” – and went on to discuss when failing to know something might itself be sinful. Again, very much in the Thomistic moral-theology orbit.
The structure reinforced that impression. There were a couple of slightly larger cue words, “An autem,” and “Dubitat,” which signaled the start of a formal question, followed by argument and resolution. And those marginal letters fitted with this type of writing: best guess was a scholastic teaching text, the kind used in classrooms and by preachers preparing sermons. Maybe not the kind of devotional reading that was most common in the Thalbach library, but not completely out of character either.
So far, so good. But where to go from here? “Scholastic teaching text” covers a very large swath of early printed books, and I do mean very large. The later Middle Ages produced a small mountain of theological compendia, and many of them summarized or adapted Aquinas. Some were organized by topics such as sin or virtue; others followed the Ten Commandments; still others took the form of alphabetical confessor’s manuals. All of them could look, at first glance, rather like this fragment.
My first guesses followed that logic. Perhaps the leaf came from a Dominican moral-theology summa such as the widely printed works associated with Antoninus of Florence. Or from another scholastic digest circulating in the late fifteenth century. The typography – that dense two-column Gothic type I mentioned above – certainly suggested a large theological folio of the incunable period. And Fechter (Inkunabeln) noted only that it was a fragment of a moral-theological text. Hmmm, that’s not very specific.
But guesses only get you so far. At some point, one has to start matching words on the page with words in actual books. And that meant turning the fragment’s surviving phrases into search clues and seeing where they led.
BREAKTHROUGH!
This is where the detective work became a little more methodical. With fragments, the trick is to find a phrase distinctive enough to search, but not so damaged by abbreviations that it disappears in transcription. Scholastic Latin can actually be helpful here: its formulas repeat across texts, but the exact phrasing often remains recognizable.
One of the lines that caught my eye early on was the question about ignorance: “Cum omissio sciendi sit peccatum…” Another promising lead was the formulation of the problem of scandal: “An autem scandalum sit speciale peccatum vel generale.” These phrases were long enough to be distinctive, but common enough in moral-theological discussions that they might turn up somewhere searchable.
So I started doing what scholars increasingly do with fragments: turning bits of Latin into search strings and seeing what the digitized book world would give back.
At first, the results pointed broadly in the direction I expected: Thomistic moral theology, discussions of scandal, questions about ignorance and culpability. But then one of the searches landed on something more specific – a passage that looked suspiciously familiar, not just in topic but in the sequence of arguments.
The text belonged to the Dominican theologian Johannes Nider, in his Praeceptorium divinae legis (often also called the Expositio Decalogi). Nider organized this work as a commentary on the Ten Commandments, and within each commandment he developed a series of scholastic questions about moral life. When I looked more closely, the match became unmistakable.
NERD ALERT: When I’m working with a just-matched text, I work forward and backward from my new-found phrase. Particularly given all of the abbreviations in my flyleaf fragments, it’s helpful to work through the more spelled-out text and do the matching. Being a color nerd, I do that by taking images of the text and its match, and highlighting the match – first match is always in yellow in my process – to see the extent of the parallel. This is helpful – earlier in the research journey I’d actually matched a passage to Aquinas himself, but that moment of joy soon dissipated as I realized that unless someone’s paraphrase had gotten out of hand, it was actually a passage citing Aquinas as authority, and not an actual ID to my text. Patience is a virtue. When I did get a hit, the yellow extended backwards, and backwards again across a couple of different screenshots. We definitely had a match.
Also in nerd-dom: when I moved to the back fly, I was cautiously optimistic that I might have a single folio sheet cut into two pieces, but I use a different highlighting (blue) until I match the sections. That was a no-go; I did find the text of the back fly in the same book, but it was NOT in the same section – it was several gatherings away.
The fragment from the front flyleaf corresponds to Nider’s Praeceptum Nonum, chapter III, discussing the nature of scandal. The back flyleaf comes from Praeceptum Quintum, chapter XIII, dealing with related moral questions about ignorance and culpability. In other words, both scraps derive from the same book – a large scholastic folio – even though they preserve pieces from different parts of it.
That also explains why the fragments look the way they do. The binder who reused the pages was not preserving a coherent leaf, but simply cutting up a worn-out theological volume and using the pieces where they were structurally useful. What survives in the binding is therefore not a single continuous page, but two scraps from different leaves of the same discarded book. I can live with that.
Once the identification clicked, the rest of the puzzle fell into place. The typography matches what we would expect for an incunable or very early sixteenth-century printing of Nider’s work: dense two-column Gothic type, heavy abbreviations, and just enough typographic cues – An autem, Dubitat – to guide the reader through the scholastic argument. What had looked at first like an anonymous piece of dense Latin suddenly resolved itself into a recognizable voice from the late medieval Dominican-orbit classroom.
WHAT’S THIS DOING AT THALBACH?
Identifying the fragment raises the question: who was Johannes Nider, and what would a book like this have meant in the world around Thalbach?
Johannes Nider (c. 1380–1438) was a Dominican reformer, university teacher, and prolific writer. His works circulated widely across fifteenth-century Europe, and – importantly – had an influence outside of the Dominican Order. In the present day, he’s most famous for the Formicarius, since witch trials are an evergreen source of fascination. (For the record, the Praeceptorium is NOT about witches! And I suspect Nider might be disappointed that “witch trials” rather than “intellectual breadth and prowess” became his claim to fame, but maybe that’s just me.)
Nider taught theology at Vienna and Basel and was closely connected to the reform movements within the Dominican Order and, by extension, with the broader currents of ecclesiastical reform in the decades surrounding the Council of Basel. His writings were practical as well as intellectual, meant to help clergy and religious communities think clearly about the moral and pastoral problems of Christian life.
The Praeceptorium divinae legis belongs squarely in that world of applied theology. It is organized as an exposition of the Ten Commandments, and within each commandment Nider develops a sequence of scholastic questions: what constitutes sin, what causes moral harm, when ignorance excuses responsibility, when it does not. The text is deeply shaped by the theological tradition of Thomas Aquinas, but its purpose is not simply academic commentary. Works like this functioned as teaching tools, helping preachers, confessors, and monastics in general reason through the moral complexities they encountered in pastoral care.
In other words, this was not a devotional book for private reading. It was a working manual for theological thinking – the sort of book used in classrooms, study circles, or by clergy preparing sermons and confessional guidance.
That context makes the fragment especially interesting for Thalbach. The library there, as far as we can reconstruct it, leaned heavily toward vernacular devotional literature: prayerbooks, saints’ lives, sermons, and spiritual reflections. A dense Latin scholastic folio like Nider’s stands somewhat apart from that landscape. It represents the learned theological infrastructure that supported the devotional world we see more clearly in the surviving books.
In practice, a text like the Praeceptorium could have been used by the clerical figures connected with the community – chaplains, confessors, visiting preachers – or perhaps even educated members of the religious house itself, since the sisters read enough to acquire a quite respectable-sized library. The sisters of Thalbach did not live in an intellectual vacuum; their devotional life was shaped by pastoral instruction, preaching, and sacramental guidance that drew on exactly this kind of moral theology. To the sisters, Nider’s discussions of scandal, ignorance, and responsibility would not have been abstract puzzles. Rather, they represent attempts to map the moral terrain of everyday Christian life: how one’s actions affect others, when a mistake becomes a sin, how responsibility is understood.
Moreover, thanks to the always-helpful Gesamtkatalog der Wiegendrucke, we know from surviving incunables that Nider’s Praeceptorium was owned by at least fourteen Franciscan houses, so Thalbach’s connection to the book is not an anomaly, but rather part of a broader pattern in the circulation of Nider’s ideas. (https://www.gesamtkatalogderwiegendrucke.de/, known familiarly as GW.)
Seen from that perspective, the fragment becomes more than a curiosity tucked into a binding. It offers a small glimpse of the intellectual toolkit of a late-medieval religious community.
NERDS WANT TO KNOW
You aren’t really done with an incunable identification, of course, until you know when and where the item was published. Here’s where a bit of brute force comes in. Since the typeface looked early (all those angles, and the heavy abbreviation), I was pretty sure the copy was late 15th century. For that, the GW is the place to start. Look up the author, click through to the list of published works, and then just plow through the printed candidates until you get a match. I decided to use the front fly (Praeceptum Nonum, chapter III) simply because it was close enough to the volume’s end to make navigating relatively easy. Yes, it meant I was checking bottom-of-page and end-of-line, but that’s just as good as beginnings when you’re looking for a typographical match. I made myself a quick cheat-sheet card with the text for the bottom of the two columns and clicked through editions. It’s easy to eliminate the single-column printings, and eventually (TAH-DAH!) I found it. My Thalbach fragments (and they are mine, now that I’ve spent this much time on them!) turn out to be pages from the Basel printing of 1481: M26911 Nider, Johannes: Praeceptorium divinae legis. Basel: [Johann Amerbach], 1481. 2°:
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| Comparison 1 of Darmstadt and Thalbach copies of Nider's Praeceporium |
Starts and ends of lines match; the larger type for “Dubitat'” is a confirmation; the marginal I/J is there. The Darmstadt copy got some rubricating that the Thalbach version lacks, but those kinds of differences are post-production. Confirmation of the shared identity comes with the back flyleaves:
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| Comparison 2 of Darmstadt and Thalbach copies of Nider's Praeceporium |
Again, larger type for “An autem”; a shared marginal letter; starts and ends of lines align; abbreviations are shared: BING BING BING we have a match!
WHY IN THE FLY?
And then, of course, we need to grapple with the afterlife of the book itself. By the sixteenth century, works like Nider’s were gradually superseded by newer theological manuals. Not only do Nider editions drop off precipitously at the turn of the 16th century, the large scholastic folio volumes also seem to go out of style. Thus, these “old fashioned” volumes became expendable, especially in smaller libraries. It’s a case of “use then re-use”: when binders needed sturdy paper to reinforce a book’s spine or flyleaves, an old theological volume provided excellent raw material. The leaves that once carried Nider’s careful distinctions about scandal and ignorance were cut up, pasted into a binding, and sat around as structural supports for a quite different text doing structural work for centuries.
The fragments from Nider’s book now serve as the pastedown flyleaves of a much smaller devotional work: Ludwig Moser’s Bereitung zum heiligen Sakrament, printed in Basel around 1493 by Michael Furter. This little octavo book offers preparation, in German, for receiving the Eucharist—the kind of spiritual guidance meant for personal devotion and practical religious life. Different in language, different in audience, and physically different too: Nider’s work circulated in large folio volumes, while Moser’s book is a compact octavo, designed to be handled and read easily. The two texts almost illustrate a miniature map of late-medieval religious culture. On the one hand, we find the scholastic theology of the university and the religious orders, where moral problems are dissected through carefully structured questions and distinctions. On the other hand, we have the vernacular devotional literature that translated those theological concerns into forms accessible to a wider religious readership.
Perhaps this should serve as a cautionary tale. We tend to look at Thalbach’s intellectual world from the perspective of the inventory of its book collection upon dissolution in 1783 (Fechter, Neuhauser). Of course, the books listed there do provide a wonderful glimpse into the interests and intellectual habits of the sisters. But those are the books that made it through and survived.
Piecing together a history that includes the books that “didn’t make it” – those carved up into flyleaf fragments, those mentioned only in archival records, those cut into tiny binding scraps to hold other books together – adds important details to the Thalbach story. It shows us that intellectual tastes change: that changes of liturgical practice or scholastic habits could render books obsolete. But those fragments also tell us that once-upon-a-time, Thalbach readers too were interested in the world of scholastic considerations of how best to live a moral life.
As resources such as the GW and https://fragmentarium.ms/ have made obvious, fragments are not merely accidents of survival. They serve as valuable witnesses to the circulation of texts and ideas. In other words, even a hard-to-decipher bit of Latin text on a flyleaf can tell us something important about the intellectual worlds of the past.
WORKS CITED
GNM 22273: Nürnberg, Germanisches Nationalmuseum, Inc. 22273: Ludwig Moser: Bereitung zum heiligen Sakrament. [Basel: Michael Furter, um 1493]. 8°. https://dlib.gnm.de/item/8Inc22273. A Thalbach incunable.
GW M26911: Nider, Johannes: Praeceptorium divinae legis. Basel: [Johann Amerbach], 1481. 2° (Darmstadt exemplar inc-iv-420, http://nbn-resolving.de/urn:nbn:de:tuda-tudigit-23203)
Fechter, Walter. “Inkunabeln aus Thalbacher Besitz.” Biblos 25 (1976): 233–42.
Fechter, Walter. “Eine Thalbacher Handschrift mit Eckhart-Predigten, Exzerpten aus Seuse, dem ps.-albertischen 'Paradisus animae' und anderem in Pavia,” Zeitschrift für deutsches Altertum 103 (1974): 311–33.
Fechter, Walter. “Thalbacher Handschriften im Ferdinandeum Innsbruck.” Codices manuscripti 2 (1976): 113-117
Neuhauser, Walter. “Der Thalbacher Übergabekatalog von 1783.” In: Gedenkschrift Eberhard Tiefenthaler, ed. by Helmut Meusburger, Thomas Feurstein. Graz: Neugebauer 1996, pp. 88-117; rpt: In libris: Beiträge zur Buch- und Bibliotheksgeschichte Tirols von Walter Neuhauser, ed. Claudia Schretter and Peter Zerlauth. Innsbruck: Universitätsverlag Wagner, 2010, pp. 311-341.[The Thalbach transfer catalog from 1783 = inventory at the Aufhebung.]
