Inside the Ouroboros of Cleopatra the Alchemist

How a single page sketched a whole philosophy of turning things into gold

Push open a heavy reading-room door and imagine a single leaf under glass: a serpent biting its tail, half light and half dark, wrapped around three Greek words, hen to pan. Nearby are tiny moons, a ring of letters, and a few odd doodles that look like a still with two spouts. This is the Chrysopoeia of Cleopatra, a one-page wonder copied a thousand years ago that still hums with laboratory heat.

The page lives today in Venice, bound into a manuscript known as Marcianus gr. Z. 299. It is a medieval copy of a late-antique scheme for chrysopoeia, gold-making, and one of the earliest alchemical images to marry symbol and benchwork. The ouroboros gives you the thesis; the tubing and vessels show you the practice.

You can read its motto in a breath. “The all is one.” Three words, a circle, and a promise that matter and meaning loop back on themselves. It’s the kind of phrase you might see on a café chalkboard, except here it’s inked beside labware.

But that single page is really a compressed world. Behind the serpent and the tubing stand three surviving texts, a sisterhood of women experimenters, a philosophical formula older than Plato, and an ouroboros tradition stretching back over a millennium to the tomb of a pharaoh. Unpack it properly and you find one of the richest nodes in the history of science.

The codex that almost didn’t survive

The page would not exist without its host. Marcianus graecus Z. 299 is the oldest and most important surviving Greek alchemical manuscript, a 10th-century codex of roughly 300 folios, equipped with an original table of contents listing fifty-two entries, most of them devoted to what Byzantine scribes called “the Sacred Art.”

The codex contains far more than Cleopatra’s page. Inside are the nine alchemical lectures of Stephanus of Alexandria (written in Constantinople in the first half of the seventh century), works by or attributed to Zosimos of Panopolis, fragments connected to pseudo-Democritus and Hermes Trismegistus, lists of alchemical symbols, riddles drawn from the Sibylline Oracles, and the Dialogue of the Philosophers and Cleopatra. It is an entire library of late-antique and Byzantine alchemy bound between two covers.

The manuscript survived because of one man’s foresight. Cardinal Bessarion (1403-1472), the Byzantine scholar-cardinal who watched Constantinople fall to the Ottomans in 1453, spent his remaining years rescuing Greek manuscripts from destruction. In 1468 he donated his vast personal collection to the Republic of Venice. The alchemical codex was among them, and it became part of the core holdings of the Biblioteca Nazionale Marciana, where it sits today.

A detail discovered recently by scholar Alexandre Roberts adds an unexpected layer. The very first page of the Marcianus contains text written in Greek script, but the language is not Greek. Several words correlate with Arabic technical vocabulary that would also have been used in Persian and Ottoman Turkish. This means Byzantine alchemists were actively engaging with Islamic alchemy, sometimes borrowing terms, sometimes concealing their sources. The Sacred Art crossed borders more freely than the empires that produced it.

Two other major manuscripts preserve the Greek alchemical corpus: Parisinus graecus 2325 (13th century, in Paris) and Parisinus graecus 2327 (copied in 1478 by the scribe Theodoros Pelecanos in Crete, also in Paris). Together, these three codices are the principal witnesses to the tradition. The 1888 edition by Marcellin Berthelot and Charles-Émile Ruelle, Collection des anciens alchimistes grecs, remains the standard published edition for some of these texts, though newer critical editions by Robert Halleux, Michele Mertens, Andrée Colinet, Matteo Martelli, and others have since superseded it for many.

The elusive Cleopatra

The author credited is Cleopatra the Alchemist, a name that floats through Greek and later Arabic alchemical writings. She is not Cleopatra VII of movie fame. This Cleopatra sits in Alexandria’s late Roman world, the bustling crossroads where glass-workers, dyers, and philosophers shared tricks of fire.

Some historians treat “Cleopatra” as a single writer active somewhere between the 1st and 4th century CE. Others suspect a pseudonym that accumulated authority across centuries, the name possibly chosen to invoke the prestige of the famous queen. Virginia Fabrizi, writing in the Wiley Encyclopedia of Ancient History (2019), argues the attribution is “very probably spurious,” testifying instead to the weight Cleopatra’s name carried in Greco-Egyptian and Byzantine alchemy. There is also occasional confusion with Cleopatra the Physician, a separate figure known for her work on gynecology and cosmetics, cited by Galen.

Either way, “Cleopatra” marks a voice within a known circle of Alexandrian experimenters. And that circle left more than one page.

Three texts, three windows

Three alchemical texts survive under Cleopatra’s name, each offering a different angle on the work.

The Chrysopoeia is the single-leaf diagram on folio 188v. No continuous prose, just symbols, drawings, and captions. It is the most visually famous document in the history of alchemy.

On Weights and Measures (Ek ton Kleopatras peri metron kai stathmon) is a practical guide describing a system of uniform weights and measurements by which alchemists could use, share, and publish their findings. The goal was to minimize variation between regions, even between individual laboratories. This was an attempt to quantify alchemy and its experiments, creating a universal standard. Not mystical; bureaucratic. And for that very reason, remarkable. Someone in the ancient world wanted alchemical recipes to be reproducible.

The Dialogue of Cleopatra and the Philosophers is the most substantial of the three. The original text dates to the 1st or 2nd century CE, though the version preserved in the Marcianus is a 7th-century Byzantine reworking, deeply influenced by Stephanus of Alexandria’s lectures.

The Dialogue opens with a question from the assembled philosophers that sounds like a riddle and a funeral at the same time. They ask Cleopatra how “the blessed waters visit the corpses lying in Hades, fettered and afflicted in darkness,” and how “the medicine of Life reaches them and rouses them as if wakened by their possessors from sleep.”

Cleopatra’s response is patient and layered. She tells the philosophers to observe plants and their growth cycles: how seasonal timing, water, and air sustain life. Then she pivots from natural observation to alchemical allegory: materials must “die” (dissolve, calcine) before being “reborn” in a higher form, the way a seed rots in the ground before sending up a shoot. Birth imagery, womb imagery, death-and-resurrection imagery. The philosopher’s stone is not a thing you find; it is a process you guide through stages of dying and coming back.

Jack Lindsay, in The Origins of Alchemy in Graeco-Roman Egypt (1970), called the Dialogue “the most imaginative and deeply felt document left by the alchemist.” It reads less like a laboratory manual and more like a meditation on what transformation means, in metal and in everything else.

Reading the page: what the serpent actually says

Look closer at the Chrysopoeia. Beyond the famous three-word motto, the page carries a longer inscription in concentric rings around the ouroboros: “One is the Serpent which has its poison according to two compositions, and One is All and through it is All, and by it is All, and if you have not All, All is Nothing.”

That last clause hits different. “If you have not All, All is Nothing.” This is not gentle mysticism. It is a totality claim: the system only works if you commit to the whole cycle. Skip a step, pull out early, and you have nothing. The serpent eats its own tail because the process cannot be interrupted.

The page also contains:

• Two concentric circles enclosing symbols for gold (sun), silver (moon), and mercury.
• An eight-pointed star evoking renewal and regeneration.
• A waxing crescent moon and a cluster of crescents and stars that scholars read as a pictorial encoding of the conversion of lead into silver.
• Diagrams of a dibikos (a two-armed alembic splitting condensed vapors into twin receivers) and a device resembling a kerotakis (a sealed container for bathing metals in vapors).
• Planetary marks and a circular text ring that reads like a clock face of operations: calcine, dissolve, distill, recombine.

The whole sheet works like a lab whiteboard annotated by a poet. Practical instructions and cosmic philosophy occupy the same square foot of parchment.

Hen to pan: where three words came from

The motto hen to pan did not originate with Cleopatra. It sits at the end of a philosophical lineage that stretches back to the earliest Greek thinkers.

Heraclitus of Ephesus (c. 535-475 BCE) taught that all things are one in some fundamental sense. His Fragment B50 says, loosely: “Listening not to me but to the Logos, it is wise to agree that all things are one.” Heraclitus saw the universe as a constant flux of opposites, fire and water, day and night, war and peace, held together by a rational principle he called the Logos. The tension between opposites was not a problem to solve. It was the engine that kept the world running.

The Stoics inherited Heraclitus’s idea. They understood the cosmos as a single living organism governed by the Logos, with all its parts interconnected through sympatheia, universal resonance. When one thing changes, everything shifts to accommodate. Fire was both the creative and destructive principle, the element that transforms without being destroyed.

The Hermetic tradition took this further. In Hermetic theology, God is both the All (to pan) and the creator of the All. Everything that exists pre-exists in God; everything that unfolds returns to God. The Emerald Tablet, that condensed manifesto of alchemical philosophy, expresses a parallel formulation: “as above, so below.” Different words, same architecture. The macrocosm and microcosm mirror each other because everything is ultimately one substance in different states of refinement.

So when Cleopatra places hen to pan inside a serpent that eats its own tail, she is compressing roughly a thousand years of philosophy into three words and a circle. Heraclitus’s flux, Stoic sympathy, Hermetic unity, all locked inside a snake that never stops cycling.

The serpent before Cleopatra

The ouroboros did not start in an Alexandrian workshop. The earliest known image is roughly over 1,500 years older.

In the Enigmatic Book of the Netherworld, found engraved on the second gilded shrine of Tutankhamun’s burial chamber (c. 14th century BCE, discovered by Howard Carter in KV62), two serpents appear holding their tails in their mouths. One encircles the head and upper chest of a large mummiform figure; the other surrounds the feet. The figure represents the unified Ra-Osiris, the sun god reborn through the lord of the dead. The serpents are manifestations of the deity Mehen, who in other funerary texts protects Ra during his nightly journey through the underworld.

The text surrounding these serpents is written in symbols that do not map onto normal hieroglyphs, hence “enigmatic.” Jan Assmann, the Egyptologist, describes the ouroboros as referring to “the mystery of cyclical time, which flows back into itself.”

The differences between the Egyptian and alchemical ouroboros are significant. The Egyptian version uses two serpents in a protective, cosmological function: they guard the cycle of solar rebirth. Cleopatra’s version is a single serpent, bicolored, containing philosophical text, functioning as a diagram for material transformation. The Egyptian serpent guards the cosmos; Cleopatra’s serpent is the cosmos, condensed to a circle of ink.

What happened in the gap of over a millennium is mostly darkness. The serpent-eating-its-tail motif appears sporadically in Gnostic texts and on magical gems from the Roman period, but the direct line from Tutankhamun’s shrine to Cleopatra’s manuscript page has not been traced. That does not mean there was no connection. Egypt was the setting for both images, and the workshops of Alexandria sat on top of millennia of temple tradition. But it does mean we are looking at a pattern rather than a proven chain of transmission.

Mary, Cleopatra, and the workshop sisterhood

Cleopatra did not work alone. She belongs to a small but documented group of women in the ancient alchemical tradition.

The most important is Mary the Jewess (Maria Prophetissa), widely considered the first true alchemist of the Western world. Mary is credited with inventing the tribikos (a three-armed still for distillation), the kerotakis (a sealed vapor chamber for treating metals), and the bain-marie (a water bath for gentle, controlled heating, the same device still used in kitchens today, though Mary’s version was designed to exceed 100°C using sealed vessels). The term balneum Mariae first appeared in writing around 1300, when Arnold of Villanova named it after her.

Mary’s most famous surviving statement is the Axiom of Maria: “One becomes two, two becomes three, and out of the third comes the One as the fourth.” Carl Jung would later use this axiom as a metaphor for the process of individuation: from unconscious wholeness, through the conflict of opposites, to a transformed state of consciousness. Cleopatra’s own formulation, “One is All and through it is All,” expresses the same intuition from a different angle. Maria counts the unfolding; Cleopatra names the unity that persists through it.

Zosimos of Panopolis (fl. c. 300 CE), the most important early alchemical writer, placed these two women at the center of the tradition. In his work “Concerning the True Book of Sophe, the Egyptian, and of the Divine Master of the Hebrews and the Sabaoth Powers,” Zosimos wrote of “two sciences and two wisdoms, that of the Egyptians and that of the Hebrews.” Scholars have long read this as a reference to Cleopatra and Mary respectively, though Zosimos does not name them directly. What he does is frame alchemy as a confluence of two ancient streams: Egyptian sacred craft and Hebrew prophetic knowledge.

The Book of Comarius makes the teaching relationship explicit. Its full title reads: “Book of Comarius, Philosopher and High Priest Who Taught Cleopatra the Divine the Sacred Art of the Philosopher’s Stone.” In this text, Comarius delivers instruction on metals, colors, and apparatus. Then a group of philosophers appears, and Cleopatra communicates to them the knowledge she has received. The text calls her “the Divine” and “the Learned.” A Christian prayer that heads the text was, as scholar Georg Luck notes, likely a later addition by a Byzantine monk who wanted to make a pagan treatise palatable to church scrutiny.

Two other women move in this circle. Theosebeia was the “spiritual sister” of Zosimos, to whom he addressed a famous cycle of twenty-eight books, each designated by a different letter of the Greek alphabet. Paphnutia the Virgin (c. 300 CE) was an Egyptian alchemist whom Zosimos criticized, in letters to Theosebeia, as uneducated and practicing alchemy incorrectly. The criticism itself is revealing: Paphnutia was clearly active enough to attract attention from the tradition’s leading voice.

Centuries later, the German alchemist-physician Michael Maier would celebrate all four. In his Symbola aureae mensae duodecim nationum (1617), a work profiling twelve great alchemists from twelve nations, Maier placed Mary the Jewess as the second (representing the Hebrew nation) and, within her chapter, named four women who had found the Philosopher’s Stone: Maria, Cleopatra, Medera, and Paphnutia. Four names across two millennia, preserved in a chain of copying and commentary. A thin thread, but an unbroken one.

Inside the apparatus

The Chrysopoeia page is not just philosophy. It is a technical drawing. And the devices it shows were real.

The dibikos (from di-, two, and bikos, vessel) is a two-armed alembic. Liquid in the main chamber is heated; the vapor rises into a dome (the “head” or ambix), condenses, and flows down through two separate tubes into twin receiving vessels. Cleopatra’s version is a simplified relative of Mary the Jewess’s tribikos, which had three arms. Mary recommended that the tubing be made from copper or bronze as thick as a frying pan, sealed at the joints with flour paste.

The kerotakis (the name may derive from keros, wax, referring to the palette used for encaustic painting) was an airtight sealed container heated from below. Metal sheets, typically copper or lead, sat on a shelf in the upper portion. Mercury or sulfur was boiled in the lower chamber, and the rising vapors bathed the metal surfaces. The results were real chemistry: lead treated with sulfur vapor produced black sulfides on its surface. Mercury combined with sulfur produced a yellow compound. Zosimos noticed that sulfur vapor was white and whitened most substances, but when absorbed by mercury (also white), the product turned yellow. These were genuine observations of chemical reactions, described in the language of transformation.

The kerotakis also made the concept of hermetically sealed equipment foundational to alchemy. The sealed vessel, the closed system where vapors circulate without escaping, became both a practical necessity and a philosophical metaphor. The ouroboros and the kerotakis express the same idea in different registers: a cycle that cannot be broken.

Archaeological evidence pushes the lineage of these devices far deeper than Alexandria. In 1950, Martin Levey identified a Late Chalcolithic jar from Tepe Gawra in Mesopotamia as the lower part of a distilling apparatus, dating to roughly 3500 BCE. Similar vessels have been found across a 3,000-year chronology at sites in Mesopotamia, Turkey, Cyprus, Sardinia, and Slovakia. On Cyprus, excavations have unearthed what may be the oldest Bronze Age perfumery (c. 1500-1200 BCE), where early stills were used to extract scents from olive oil, bergamot, and labdanum. The basic principle, heat a liquid, capture the vapor, condense it elsewhere, appears to have been rediscovered independently multiple times across millennia. Distillers essentially identical to those found at Tepe Gawra are still producing rose water in Iran today.

The afterlife of the page

Cleopatra’s work did not stay in Greek. When the center of alchemical activity shifted eastward, her name traveled with it.

Syriac played the pivotal bridging role. Rich collections of alchemical treatises dating from the 6th to 10th centuries survive in Syriac manuscripts, attributed to authorities such as Democritus, Ostanes, and Zosimos. These Syriac translations became the intermediate step before Arabic versions were produced. The scholar Matteo Martelli (University of Bologna) has traced the specific pathways by which Greek alchemical fragments were translated into Syriac and then disseminated in Arabic compendia.

By 988 CE, Cleopatra was mentioned “with great respect” in the Kitab al-Fihrist, the encyclopedic catalogue compiled by the Shiite scholar Ibn al-Nadim in Baghdad. Her name appears in the tenth chapter, alongside Hermes and other foundational alchemical authorities. She had become part of the canon.

The transmission back to Europe took a more colorful path. Khalid ibn Yazid (late 7th century), an Umayyad prince, is traditionally credited with sparking the translation of Greek alchemical texts into Arabic. From Arabic, the knowledge passed into Latin during the 12th and 13th centuries, feeding the great wave of medieval European alchemy. The concepts that Cleopatra and her circle developed, sealed distillation, cyclical transformation, the unity of matter, arrived in Paris and Oxford wearing Arabic clothes over Greek bones.

In the Renaissance, Cleopatra’s image resurfaced in unexpected places. At the Galleria Spada in Rome, a painting by Lavinia Fontana (c. 1585-1605), traditionally titled simply Cleopatra, depicts a clothed woman surrounded by a brass vase with an emerging serpent, an ibis, and a wardrobe decorated with circles and stars. Art historian Liana de Girolami Cheney has argued (2018) that the iconography does not match the standard depiction of Cleopatra VII’s suicide, but instead alludes to Cleopatra the Alchemist, with the serpent referencing the ouroboros and the celestial decorations pointing to alchemical symbolism. The identification remains debated, but the fact that a Renaissance painter might have distinguished between the two Cleopatras tells you something about how far the alchemist’s name had traveled.

What the page holds open

The Chrysopoeia of Cleopatra is not a solved document. It is a compressed transmission, a page that packs philosophy, laboratory procedure, cosmological symbolism, and metallurgical practice into a single leaf. It sits at the intersection of at least four traditions: Egyptian solar theology, Greek philosophical monism, Hermetic mysticism, and Alexandrian practical chemistry. It speaks to anyone who has wondered whether transformation is a physical event, a spiritual one, or both at once, and whether the distinction even matters.

The Venice codex is not a casual drop-in, but reproductions travel widely. When you meet the image, trace these details:

• The three-word motto inside the serpent: hen to pan.
• The longer inscription in the concentric rings: “One is the Serpent which has its poison according to two compositions…”
• The double-spouted still (dibikos) and the sealed vapor plate (kerotakis).
• The crescent-and-star cluster, encoding the conversion of lead into silver.
• The serpent’s two tones, a visual shorthand for the Hermetic pairs: moist and dry, hot and cold, above and below.

Spend a minute with the circle, and you may hear the quiet clink of glass, the whisper of steam, and a reminder that in old workshops, philosophy was something you could boil. This practical approach to alchemy, combining visual symbolism with laboratory technique, was shared by other Alexandrian alchemists like Zosimos of Panopolis, whose writings would become foundational texts in the alchemical tradition, and conceptual descendants like Nicolas Flamel, who wrapped similar ideas in the language of medieval Paris.

Further Reading & Related

• Zosimos of Panopolis, Cleopatra’s near-contemporary whose writings fix much of early Greek alchemy on the map.
• Hermes Trismegistus, the legendary founder figure of the Hermetic tradition that fed Cleopatra’s philosophy.
• The Philosopher’s Stone, the goal that drove alchemical experimentation from Alexandria to early modern Europe.
• The Testament of Solomon, another text that traveled the same Greek-to-Syriac-to-Arabic transmission route.
• Marcianus gr. Z. 299 at Princeton Byzantine Manuscripts Database, scholarly description of the codex.
• Alexandre Roberts, “Framing a Middle Byzantine Alchemical Codex” (2019), the key modern study of the Venice manuscript.

Sources

Bibliography. The same list is held in the article’s frontmatter for the citation tools that read it programmatically.

• Marcellin Berthelot and Charles-Émile Ruelle, Collection des anciens alchimistes grecs (Paris, 1888)
• Jack Lindsay, The Origins of Alchemy in Graeco-Roman Egypt (London: Frederick Muller, 1970)
• Virginia Fabrizi, ‘Cleopatra the Alchemist,’ in The Wiley Encyclopedia of Ancient History (Wiley-Blackwell, 2019)
• Matteo Martelli, The Four Books of Pseudo-Democritus (Maney Publishing / University of Bologna, 2014)
• Michele Mertens, Les alchimistes grecs IV.1: Zosime de Panopolis, Mémoires authentiques (Paris: Les Belles Lettres, 1995)
• Robert Halleux, Les alchimistes grecs I: Papyrus de Leyde, Papyrus de Stockholm, Recettes (Paris: Les Belles Lettres, 1981)
• Andrée Colinet, Les alchimistes grecs X: L’anonyme de Zuretti (Paris: Les Belles Lettres, 2000)
• Alexandre M. Roberts, ‘Framing a Middle Byzantine Alchemical Codex,’ Dumbarton Oaks Papers 73 (2019)
• Raphael Patai, The Jewish Alchemists: A History and Source Book (Princeton University Press, 1994)
• Lawrence M. Principe, The Secrets of Alchemy (University of Chicago Press, 2013)
• Michael Maier, Symbola aureae mensae duodecim nationum (Frankfurt, 1617)
• Ibn al-Nadim, Kitab al-Fihrist (Baghdad, 988 CE), ed. Bayard Dodge, The Fihrist of al-Nadim (Columbia University Press, 1970)
• Jan Assmann, The Search for God in Ancient Egypt (Cornell University Press, 2001)
• Georg Luck, Arcana Mundi: Magic and the Occult in the Greek and Roman Worlds (Johns Hopkins University Press, 2nd ed., 2006)
• Martin Levey, ‘Evidences of Ancient Distillation, Sublimation and Extraction in Mesopotamia,’ Centaurus 4, no. 1 (1955)
• Liana De Girolami Cheney, ‘Lavinia Fontana’s Cleopatra the Alchemist,’ Notes in the History of Art 37, no. 4 (2018)
• Howard Carter, The Tomb of Tut-Ankh-Amen, 3 vols. (London: Cassell, 1923-1933)
• Marcianus graecus Z. 299, 10th-century Byzantine alchemical codex, Biblioteca Nazionale Marciana, Venice (folio 188v: Chrysopoeia of Cleopatra)
• Parisinus graecus 2325 (13th c.) and Parisinus graecus 2327 (copied 1478 by Theodoros Pelecanos), Bibliothèque nationale de France
• The Dialogue of Cleopatra and the Philosophers and Book of Comarius, in Berthelot-Ruelle, Collection des anciens alchimistes grecs (1888), vol. II