Hermes Trismegistus

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His bodily senses held fast, his thought lifted to an immense height, Hermes hears his own name spoken by a presence of boundless magnitude, which asks what he wishes to hear and see, to learn and know. The presence names itself Poimandres, the Mind of the Sovereignty, and unfolds the vision that opens the Corpus Hermeticum: light without limit; a moist, coiling darkness; a holy Word descending upon the waters; the making of the cosmos; the descent of Man, who saw his own form reflected in nature, loved it, and came down; and the road of return, by which the soul, rising through the spheres, gives back to each power what each had lent. When the vision closes, Hermes turns to mankind and begins to teach. The whole Hermetic literature stands inside that scene — revelation received in Egypt by a sage great enough to carry it, who then hands it on.

The doubled name

The sage is Hermes Trismegistus — “thrice-greatest Hermes” — and the name is itself a meeting of two worlds: the Greek Hermes, god of roads, messages, and crossings, joined to the Egyptian Thoth, scribe of the gods and lord of wisdom. The junction was already old when the treatises were written. Plato tells of Theuth, the Egyptian inventor of letters, in the Phaedrus in the fourth century BCE; Greek settlers knew Thoth’s cult city in Middle Egypt simply as Hermopolis, the city of Hermes; Cicero counted among his Mercuries an Egyptian one who gave that land its laws and letters, and Plutarch and Diodorus knew the same god. The epithet, too, is Egyptian before it is Greek. Thoth’s titulature piles up the intensifier — “great, great, great” — in temple and Demotic sources, Esna among them, and the minutes of an ibis-cult council held near Memphis in 172 BCE already render the title in Greek: “of the greatest and greatest god, great Hermes.” The contracted form Trismegistos surfaces in literary writers of the later first and second centuries CE, Athenagoras and Philo of Byblos among the earliest. The god in his own right — ibis and baboon, reckoner of the moon, inventor of writing — belongs to the entry on Thoth; what matters here is that by the time the Hermetica speak, Hermes Trismegistus stands ready: an Egyptian intelligence wearing a Greek name.

The books under his signature

Under the doubled name accumulated a literature. Its philosophical wing is a body of dialogues in Greek, composed in Roman Egypt between the late first and third centuries CE, in which Hermes — here a sage of deepest antiquity rather than a god — receives or transmits the knowledge that saves. He teaches his son Tat, a hellenized form of Thoth’s own name; the disciple Asclepius; and King Ammon. The teaching moves dialogically, stage by stage, toward gnosis: visions of Mind, the architecture of the cosmos, the soul’s ascent. Its idiom is Egyptian theology speaking the school vocabulary of Middle Platonism and the Stoa.

What survives is more various than the one famous title suggests. The Corpus Hermeticum proper consists of seventeen Greek treatises — early editions counted a “Book XV,” assembled from Suda and Stobaeus material, which modern editors omit. The Asclepius, whose Greek original, the Perfect Discourse, is lost, survives complete in a Latin version transmitted among the works of Apuleius. The anthologist Stobaeus preserved excerpts, among them the Korē Kosmou, the “Virgin of the World.” An Armenian collection, the Definitions of Hermes Trismegistus to Asclepius, and fragments preserved at Vienna extend the witnesses. And in 1945 a sealed jar at Nag Hammadi yielded fourth-century Coptic translations of three Hermetic works — the Discourse on the Eighth and Ninth, a Prayer of Thanksgiving, and an excerpt of the Asclepius — copied alongside Gnostic scriptures: an archaeological window onto a community that read, prayed, and practiced these teachings, though the find, buried until the twentieth century, transmitted nothing to anyone in between.

The other wing of the literature is technical: treatises of astrology, alchemy, iatromathematics, and magic traveling under the same signature. Scholarship long treated the two piles separately, a high road and a low one; more recent work reads them as a single milieu. In neither pile did Hermes write a word, in the way no one wrote them: pseudonymous attribution was how that world conferred authority, and Hermes outperformed every rival. In Arabic his literature grew into one of the largest bodies of writing attached to the figure in any language, and the astrologer Abū Maʿshar al-Balkhī (d. 886) gave him a genealogy to match — three Hermeses, the first of them one with the prophet Idrīs and with Enoch — a career that runs through the Arabic Hermetica.

The Greek dialogues themselves traveled a narrow road. Every extant Greek manuscript is late medieval, copied between the fourteenth and seventeenth centuries; the modern critical edition collated twenty-eight of them, of which roughly fifteen carry only the first fourteen treatises. The pivotal Byzantine witness is Michael Psellus, the eleventh-century scholar of Constantinople, who read and commented on the corpus.

Witness to the church

What made the name so potent was its age — the depth of time the voice claims for itself. The early Christian writers received Hermes as a real sage of remotest antiquity, older than the philosophers of Greece, and his anticipations of monotheism made him a witness they could cite. Lactantius, writing in the early fourth century, is the favorable witness: his Hermes is the fifth of Cicero’s Mercuries, founder-figure of Hermopolis, author of books beyond counting on the knowledge of divine things, who taught the majesty of the one supreme God — a God without a name, since, as Lactantius renders the teaching, “He who is one only does not need a name.” Augustine is the hostile one: in the City of God he quotes the Asclepius at length on the god-making of the Egyptians — the temple statues ensouled by art — and on the foretold desolation of Egypt’s religion, and condemns the whole as the work of deceiving spirits. Yet even Augustine grants the antiquity, with a genealogist’s precision: Trismegistus flourished “long before the sages and philosophers of Greece, but yet after Abraham, Isaac, Jacob, and Joseph, and even after Moses himself” — grandson of an elder Mercury, whose grandfather Atlas the astronomer lived in Moses’ day. For the ancient church, then, Hermes was pre-Greek but post-Mosaic; the stronger claim, that he stood beside Moses or before him, belongs to a later age. Between Lactantius’s pagan prophet and Augustine’s demon-taught sage, the double Christian posture toward Hermes was fixed, and the Renaissance inherited both.

Contemporary of Moses

The Renaissance inherited the chronology and built on it. Around 1460 the monk Leonardo da Pistoia carried a Greek manuscript of the first fourteen treatises to Florence, into the hands of Cosimo de’ Medici; in 1462 Cosimo ordered Marsilio Ficino to set Plato aside and translate Hermes first, on the understanding that Hermes stood nearer the source. The translation was finished in April 1463 and printed at Treviso on December 18, 1471; at least sixteen editions followed by 1500, some two dozen by 1600. Ficino’s preface placed Hermes shortly after Moses, at the head of the lineage of the prisca theologia — Hermes, Orpheus, Aglaophemus, Pythagoras, Philolaus, Plato — the one ancient theology descending intact to the Greeks. In the 1480s the claim was laid into the marble floor of Siena Cathedral, where an inlaid pavement names him “Hermis Mercurius Trismegistus contemporaneus Moysi” — contemporary of Moses; some made him Moses’ elder. The world raised on that chronology, through Giordano Bruno’s Egyptianism and beyond, is told in the entry on Renaissance Hermetism.

In 1614 the chronology met philology. Isaac Casaubon, in the first exercise of his De rebus sacris et ecclesiasticis exercitationes XVI (London, 1614), written against Baronio’s ecclesiastical annals, examined the Greek of the treatises and showed it to be post-classical: the diction, the syntax, the locutions of the Septuagint placed the texts in late antiquity, not at the dawn of time. The demonstration stands; modern study dates the corpus to roughly the first through third centuries CE. Its effect divided along the very seam the name had always straddled. In learned culture the disenchantment was slow but in the end thorough; in the esoteric channels the name sailed on — through Rosicrucianism, the Cambridge Platonists Henry More and Ralph Cudworth, the alchemists, Athanasius Kircher, Freemasonry, and Theosophy, a persistence traced under the modern Hermetic revival. And the Emerald Tablet — a separate text attached to Hermes’ name through Arabic channels, its earliest witness the Kitāb sirr al-khalīqa of the late eighth or early ninth century, its Latin made by Hugo of Santalla in the twelfth — kept its career regardless of dates, the maxim as above, so below traveling wherever the name did.

Recovering the Egyptian Hermes

English readers met the corpus through its Latin and vernacular afterlife before they met it critically. John Everard’s Divine Pymander of 1650 was the first complete English rendering from the Latin tradition; John David Chambers translated the theological works in 1882 (T. & T. Clark, Edinburgh); and G. R. S. Mead’s three-volume Thrice-Greatest Hermes of 1906 carried the texts into the Theosophical world and fixed “Thrice-Greatest” in English.

The critical scholarship since then has been a long argument about where Hermes belongs. Richard Reitzenstein’s Poimandres (B. G. Teubner, Leipzig, 1904), the first modern critical monograph on the Hermetica, opened the question by arguing for the corpus’s Egyptian character. André-Jean Festugière answered for Greece — his four-volume La Révélation d’Hermès Trismégiste (1944–1954) divided the philosophical from the technical Hermetica and read the dialogues as Greek philosophy in Egyptian dress — and the critical edition he produced with Arthur Darby Nock for the Collection Budé (Corpus Hermeticum, Les Belles Lettres, Paris, 1945–1954), collating the twenty-eight known manuscripts, remains the reference text. Walter Scott’s four-volume Oxford Hermetica (1924–1936, completed by A. S. Ferguson) stands beside it as a monument of emendation whose translation is no longer trusted. The reintegration came from Garth Fowden, whose The Egyptian Hermes: A Historical Approach to the Late Pagan Mind (Cambridge University Press, 1986; second edition Princeton, 1993) read the philosophical and technical writings as one Greco-Egyptian milieu and established the figure as a window onto the religious world of Roman Egypt, where Greek philosophy and Egyptian temple wisdom genuinely met. Jean-Pierre Mahé’s studies of the Coptic Hermetica pressed the Egyptian weight of the corpus further, and Christian H. Bull’s The Tradition of Hermes Trismegistus: The Egyptian Priestly Figure as a Teacher of Hellenized Wisdom (Brill, 2018) carries the recovery to its current point: the treatises issue from Egyptian priestly milieus and describe a lived “way of Hermes” — ritual practice, not literary philosophy alone.

For the texts, Brian P. Copenhaver’s Hermetica (Cambridge University Press, 1992) is the standard English translation, its introduction the entry point to the manuscript history and the epithet’s documentary trail. The figure’s afterlives have their own historians. Florian Ebeling’s The Secret History of Hermes Trismegistus (Cornell University Press, 2007) follows the reception from antiquity to modernity and calls the non-historical Hermes “a fruitful fiction.” Kevin van Bladel’s The Arabic Hermes: From Pagan Sage to Prophet of Science (Oxford University Press, 2009) reassessed the three-Hermeses doxography and dismantled the older thesis of an unbroken Hermetic cult at Harran. And Wouter J. Hanegraaff’s “How Hermetic was Renaissance Hermetism?” (Aries 15.2, 2015) presses the post-Yates question — Frances Yates’s 1964 thesis, which made Hermeticism an engine of the Scientific Revolution, is substantially superseded — arguing that most Renaissance “Hermeticists” are better described as Platonic Orientalists, and sharpening the working distinction between the ancient Hermetism of the treatises and the broader Hermeticism of the early modern centuries.

The figure has led two lives: inside the texts, a teacher whose instruction turns Tat, Asclepius, and Ammon toward the knowledge that saves; outside them, a name whose authority outlived the loss of every historical claim made for it. Both lives were already running in Roman Egypt, and one small object in the Louvre holds them together: a brass balsamarium for incense (BR 2940), thirteen centimeters high, made in the first or second century CE — possibly in an Alexandrian workshop — and found in Egypt, cast as the head of a young, athletic Hermes, his eyes inlaid with silver, the feather of Maat set between the wings of Hermes on his brow.

→ In the library: Mead — Thrice-Greatest Hermes, Vol. I (Prolegomena) · The Corpus Hermeticum (Mead) — I. Poemandres · The Corpus Hermeticum (Mead) — XIV. The Secret Sermon on the Mountain · The Divine Pymander (Everard, 1650) · The Virgin of the World — Korē Kosmou (Kingsford & Maitland, 1885)

→ Related: Thoth · Asclepius · Hermopolis Magna · Arabic Hermetica · Renaissance Hermetism · Modern Hermeticism Hermetic Revival · Marsilio Ficino · Isaac Casaubon · Prisca Theologia · As Above So Below · Nous · Nag Hammadi Library