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A New Renaissance of Ancient Wisdom

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Collections

15,595 translations · 5,951 for the first time · 14,698 artworks · 151,349 illustrations

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1555 books

Sacred Texts

1046 books

Hermetica

1147 books

Mysticism

930 books

Alchemy

647 books

Magic & Occult Arts

316 books

Kabbalah

667 books

Astrology & Divination

1591 books

Natural Philosophy & Science

1265 books

Medicine & Natural History

610 books

Secret Societies

1790 books

Christian Theology

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collections

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Featured Collection

Christian Theology

Scholasticism, Reformation & Apologetics

The intellectual architecture of Christian thought from the Church Fathers to the Reformation and beyond. Patristic theology (Origen, Augustine, the Cappadocians), medieval scholasticism (Aquinas, Anselm, Bonaventure), Reformation debates (Luther, Calvin, Erasmus), mystical theology (Eckhart, Böhme, Porete), and the biblical manuscripts and printed Bibles that carried the tradition across two millennia.

Explore 1790 books

De Civitate Dei

Summa Theologica

The Gutenberg Bible

Contra Celsum (1481 editio princeps)

Institutes of the Christian Religion (Greek translation)

The Imitation of Christ

Complutensian Polyglot Bible

Basel, Universitätsbibliothek, AN III 12

From the Collection

Illustrations from rare books in the library

portrait

The Book of Directions

Bar Hebraeus (1986)

emblem

The Celestial Tree of Natal Astrology

Vaidyanatha Dikshita (1421)

emblem

The Splendour of the Sun

Solomon Trismosin (1582)

woodcut

Commentary on the Divine Comedy

Landino, Cristoforo (1481)

diagram

Instruction in Measurement

Albrecht Dürer (1525)

woodcut

The Divine Comedy with Commentary by Cristoforo Landino

Dante Alighieri; Landino, Christophoro (commentator) (1487)

emblem

Kircher Ars Magna Lucis et Umbrae (1646)

Athanasius Kircher (1646)

emblem

Collection de 84 tableaux, habits, cordons et byous de différens Grades de perfection Français, peinte en couleurs d'aprés les dessins du Frère Löwen

Unknown

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Translated primary sources from the collection.

First Translation

将棋絶妙. 上

Itō Sōkan (伊藤宗看)

Japanese179747 pages

✓ OCR

0% Translated47/47

First Translation

be bum sangs rgyas lag bcang las/ yum bka’ phag dkar shes rab gsal byed ma’i sgrub thabs

Ogyen Choling Collection

Tibetan170032 pages

78% OCR25/32

0% Translated25/32

First Translation

Ancient Philosophy Restored

Marci z Kronlandu, Jan Marek

Latin1676602 pages

4% OCR27/602

✓ Translated

Aramaic Incantation Texts from Nippur

James A. Montgomery

Aramaic1913437 pages

✓ OCR

✓ Translated

The Politics of Aristotle (with English notes by Richard Congreve)

Aristotle

English1855572 pages

✓ OCR

89% Translated565/572

Outlines of British Fungology

M.J. Berkeley

English1860582 pages

3% OCR20/582

0% Translated20/582

Plutarch's Moralia, Vol. 1 (Loeb 197: 1A-86A)

Plutarch; trans. Frank Cole Babbitt

English1927284 pages

✓ OCR

0% Translated283/284

Theses ex materia successionis ab intestato

Bonrieder, Rudolf

Latin158016 pages

94% OCR15/16

0% Translated15/16

Secret of Secrets

Pseudo-Aristotle

Latin1555152 pages

✓ OCR

0% Translated152/152

Egyptian Book of the Dead

E. A. Wallis Budge

Egyptian1913434 pages

96% OCR417/434

0% Translated396/434

Research Notes

AI-assisted research on the collection and its history

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Deep dive

The Hidden Engineers: Steam Engines in Spell Books, Automata in Alchemy

Before engineering was a discipline, its knowledge lived inside alchemy, natural magic, and mystical philosophy.

27 February 2026 · 22 min read

Deep dive

What Is the Philosopher's Stone? Eight Answers from the Primary Sources

An allegorical emblem sequence, a universal salt, a red powder found in a bishop's tomb — eight primary sources, eight different answers.

27 February 2026 · 20 min read

Collection

Rithmomachia: The Forgotten Game That Taught Europe to Think Like Pythagoras

Five treatises in five languages document a mathematical board game played across Europe for six centuries.

2 March 2026 · 18 min read

Collection

Over 500 First English Translations

Alchemical lab manuals, radical theology, women alchemists, Sanskrit astrology manuscripts — all previously inaccessible in English.

20 February 2026 · 14 min read

The rediscovery of ancient wisdom helped spark the Renaissance. It's time for another.

Centuries of humanity's deepest thinking sit locked in Latin and other inaccessible languages. These aren't just inaccessible to humans; contemporary AI systems were trained on Reddit but not the Renaissance. Millions of books and manuscripts are unscanned and untranslated. These aren't obscure footnotes. They are the roots of modern science, psychology, philosophy of mind, and the perennial questions about what it means to be human.

The Source Library uses scholarship and AI systems to recover this knowledge and make it accessible to all. We are building the world's largest open-access collection of translated primary sources—so that scholars, seekers, and AI systems can draw on the full depth of the human intellectual tradition. This work is sustained by the people who use and value it.

The Source Library is an initiative of the Embassy of the Free Mind in Amsterdam, home to the Bibliotheca Philosophica Hermetica: one of the world's most important collections of Hermetic, alchemical, and esoteric books.

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Thousands of texts from the ancient and early modern world remain untranslated and unread. Your support funds the digitization, OCR, and AI-assisted translation of these works—making them freely available to scholars, seekers, and the public for the first time.

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16,076 books · 6,184+ authors · 161+ languages

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