A short history of numerology

The earliest evidence of people taking numbers seriously as bearers of meaning comes from Babylon, sometime in the second millennium BCE. Babylonian astronomers were the first to keep continuous, dated records of the night sky. They counted stars, tracked planets, and — importantly for our story — worked in a base-sixty system that still survives in the way we tell the time. Numbers were the language in which the heavens spoke, and that idea, once established, never went away.

Egyptian priests added their own contribution. The geometry of the pyramids, the cycles of the Nile, the calendar of seventy-two five-day weeks — all of it sat on the assumption that arithmetic and the order of the world were the same thing seen from two angles. None of this is numerology in the modern sense. Nobody in Babylon was calculating their Life Path. But the underlying conviction — that numbers carry meaning beyond mere quantity — is the seed from which the later tradition grew.

By the time Greek thinkers began to travel and learn from these older cultures, the soil was ready. What was needed was a teacher who would tie the threads into a system.

After the Pythagorean school dispersed in the political turmoil of the fifth century BCE, the explicit study of numbers as character migrated. In the Latin-speaking West it persisted under cover — Saint Augustine in the fifth century CE could still write that numbers were the universal language of God, which is essentially the Pythagorean position with a Christian gloss. In Jewish mysticism it flourished. The Sefer Yetzirah, the Book of Formation, dated by scholars somewhere between the third and sixth centuries CE, treats the twenty-two letters of the Hebrew alphabet as the building blocks of creation, each with a numerical value.

By the medieval period this had grown into the full system of gematria — the practice of reading the numerical totals of Hebrew words and finding meaning in matches. The Zohar, the foundational text of Kabbalah, was composed in thirteenth-century Spain by Moses de León. In sixteenth-century Safed, the school around Isaac Luria developed the Tree of Life into the elaborate diagram still copied in modern books. None of this is numerology in the Anglo-Saxon sense, but it is numerology's cousin, and the two traditions have leaked into one another ever since.

In Renaissance Europe, figures like Cornelius Agrippa pulled all of this together in works of natural magic that were as much about astrology and alchemy as about numbers. The tradition stayed alive but moved underground as the Enlightenment dismissed it. It would take the late nineteenth century to bring it back into print.