MISSIONDecember 2025

Why Latin Matters: 500,000 Unread Books

The Renaissance produced half a million Latin works. 97% have never been translated into English. This isn't a footnote in history—it's a catastrophic loss of human knowledge.

The Scale of What We're Missing

Between 1450 and 1700, European printers produced approximately 1.6 million distinct editions. Of these, 533,000 were in Latin—the international language of scholarship, science, law, medicine, and theology.

These weren't obscure pamphlets. They were the operating system of European civilization: medical textbooks that trained generations of doctors, legal commentaries that shaped modern law, theological treatises that defined religious thought, scientific works that laid the groundwork for the Enlightenment.

Today, approximately 3% of these works have English translations. The rest—nearly half a million books—are effectively invisible to modern scholarship and entirely inaccessible to the general public.

The Accessibility Crisis

The problem isn't just translation. It's a cascading series of barriers:

Total Latin works (1450-1700)521,206
Digitized (scan exists)~94,000 (18%)
Searchable text (OCR/transcribed)~42,000 (8%)
Translated to English~16,000 (3%)

Even when a scan exists, it's often a low-quality image of 16th-century typography that no OCR software can read. Even when the text is transcribed, it's in a form of Latin that requires specialized training to understand. And even scholars who read Latin can only work through a tiny fraction of what exists.

What Kind of Knowledge?

This isn't just “old books.” The USTC data reveals what subjects dominated Latin publishing:

  • Religious texts — 185,000 works. The theological debates that shaped Protestantism, Catholicism, and Western ethics.
  • University publications — 150,000 works. Dissertations, disputations, and lectures that defined academic disciplines.
  • Legal texts — 73,000 works. Commentaries on Roman law that still influence legal systems today.
  • Medical texts — 29,000 works. The state of medical knowledge for 250 years.
  • Philosophy — 29,000 works. Including most of the primary sources on scholasticism, humanism, and early modern thought.

We have fragments. We have the “greatest hits” of a few famous names—Erasmus, More, Bacon. But the vast conversation of which they were part remains inaudible.

Why This Project Exists

This project has three goals:

  1. Quantify the gap. Using data from the Universal Short Title Catalogue (USTC), we're building the first comprehensive picture of what exists, what's digitized, and what's translated.
  2. Identify priorities. Not all 500,000 works are equally important. By analyzing edition counts, citation patterns, and subject matter, we can identify the most valuable untranslated texts.
  3. Enable access. Modern AI can translate Latin at scale. The question is: can we use it responsibly to open up this heritage? That requires knowing what exists and what matters.

The Decline of Latin

One striking pattern in the data: Latin's share of publishing collapsed over 250 years.

1470s:80% Latin / 20% vernacular
1520s:45% Latin / 55% vernacular
1600s:47% Latin / 53% vernacular
1690s:20% Latin / 80% vernacular

By the time Latin faded from common use, it had accumulated five centuries of scholarship. When it stopped being widely read, that scholarship didn't disappear—it became frozen in time, waiting for readers who would never come.

What You Can Do

This project is open source. The data is freely available. If you're a:

  • Scholar — Help us identify which untranslated works matter most in your field.
  • Developer — Help us build tools to make Latin texts more accessible.
  • Latinist — Help us validate AI translations and identify errors.
  • Curious person — Spread the word. Most people have no idea this heritage exists.

Five hundred thousand books are waiting. Let's start reading them.

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The Forgotten Giants