The foundational texts of Jewish and Christian Kabbalah — including the Sefer Yetzirah, Kircher's Oedipus Aegyptiacus, and Reuchlin's De Arte Cabalistica — are now freely readable in English
FOR IMMEDIATE RELEASE
Amsterdam — In 1517, the same year Martin Luther nailed his theses to the door in Wittenberg, the German humanist Johannes Reuchlin published De Arte Cabalistica — a book arguing that the Jewish mystical tradition of Kabbalah held the key to understanding Christianity itself.
It was an explosive claim. Reuchlin had already faced an Inquisition for defending Jewish books against destruction. His De Arte Cabalistica went further: it presented Kabbalistic ideas about the divine names of God, the emanation of creation through ten sefirot, and the mystical power of the Hebrew alphabet as the deepest wisdom available to humanity.
This text, and the tradition it drew upon, is now freely accessible in English through Source Library, the AI-powered digital library created by the Embassy of the Free Mind in Amsterdam.
The Kabbalistic tradition, rooted in medieval Jewish mysticism, proposed that reality emanated from a divine source called Ein Sof (the Infinite) through a series of ten emanations or attributes (sefirot). Language — specifically Hebrew — was not merely a way of describing reality but the instrument through which reality was created.
The Sefer Yetzirah (Book of Formation), one of the oldest Kabbalistic texts, describes creation itself as a combinatorial explosion of Hebrew letters — anticipating modern mathematics by a millennium:
“Two stones build two houses, three stones build six houses, four stones build twenty-four houses, five stones build one hundred and twenty houses, six stones build seven hundred and twenty houses, and seven stones build five thousand and forty houses. From here onward, go and calculate what the mouth is unable to pronounce and the ear is unable to hear.”
“Stones” are letters; “houses” are the words they form. The text is describing factorials — 2!, 3!, 4!, 5!, 6!, 7! — as the mathematics of divine creation. This is one of the earliest known discussions of combinatorial mathematics in any tradition.
When Athanasius Kircher synthesized Kabbalistic thought with Egyptian and Greek philosophy in his Oedipus Aegyptiacus (1652), he wrestled with the Kabbalistic insight that the infinite God exceeds all categories — that unity itself is both the origin and end of all number:
“It is necessary in number to reach the minimum, than which nothing smaller can be; and this is unity: and since nothing smaller than unity can exist, this unity will be the absolute minimum, and thus will coincide with the absolute maximum.”
These ideas electrified Renaissance Europe. Giovanni Pico della Mirandola had introduced Kabbalah to Christian intellectuals in his famous 900 Theses of 1486. Reuchlin systematized it in De Arte Cabalistica (1517). Together, they created the tradition of “Christian Kabbalah” that would influence thinkers from Cornelius Agrippa to Kircher to Leibniz.
Source Library's Kabbalistic holdings draw from the Bibliotheca Philosophica Hermetica's exceptional collection of Christian Kabbalistic texts:
“The Kabbalistic tradition asks the most fundamental question you can ask about language,” says the Source Library editorial team. “Not ‘What do words mean?’ but ‘Do words make things real?’ In an era when AI systems are learning to generate language with unprecedented power, that question has never been more relevant.”
The Sefer Yetzirah's insight — that reality emerges from the combinatorial permutations of a finite set of symbols — is strikingly close to how modern computation works. The relationship between language and reality, between naming and creating, is central to both Kabbalistic thought and contemporary debates about artificial intelligence. When a large language model generates text that shapes human decisions and beliefs, is that fundamentally different from the Kabbalistic idea that divine speech creates the world?
Source Library doesn't answer that question. It makes the original texts available so that anyone can engage with it.
Read the texts: sourcelibrary.org
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