The History of Secret Societies: Origins to the Modern Era

The history of secret societies is the history of a recurring pattern in human social and religious life: the formation of small, oath-bound, hierarchical groups that guard their teachings, ceremonies, or membership from the wider public. The pattern appears in every period of recorded history and in every region of the world, and it emerges under strikingly similar conditions — religious persecution, political repression, the need to protect dangerous or sacred knowledge, mutual aid among members, and the transmission of esoteric teachings that require a long preparatory discipline. The ancient mystery cults of Egypt, Greece, and Rome established the template; the medieval secret societies of Europe and the Middle East transformed it under the conditions of monotheistic religion; the Renaissance secret societies of early modern Europe revived and recoded the ancient esoteric tradition; and the modern fraternal, political, and esoteric orders of the eighteenth, nineteenth, and twentieth centuries produced the fraternal organizations, occult societies, and elite networks that continue to shape public discussion of the secret society today. This article traces the broad outlines of that history from the prehistoric origins of ritual initiation to the conspiratorial landscape of the modern world.

Prehistoric Origins and the Archaeology of Secrecy

The impulse toward secrecy in human social life appears to be as old as ritual itself. Cave paintings in southern France and northern Spain, some of them dating to the Upper Paleolithic period, depict masked or costumed figures engaged in ceremonial activity, and many prehistorians interpret this imagery as evidence of secret ritual life. The cave of Trois-Frères in the French Pyrenees, for example, contains a figure known as “the Sorcerer” — a human-like form with the head of a bull, the ears of a deer, and the tail of a horse — and similar hybrid figures appear at other Magdalenian sites. Whether these images depict actual ritual specialists or are products of shamanic imagination is debated, but they suggest that the division between initiated and uninitiated, between those who knew the meaning of the rites and those who did not, was already established in prehistoric culture.

The later prehistoric and early historic periods provide more concrete evidence of secret-society-like organizations. The “ladder” of social and ritual grades that appears in many early Indo-European cultures — the warrior, the priest, the king — has been interpreted by some scholars (notably the French historian Georges Dumézil and the British comparative mythologist J.G. Frazer) as evidence of an archaic tripartite ideology in which each social function had its own ritual specialists and its own esoteric knowledge. The warrior fraternities of Celtic, Germanic, and Scandinavian cultures — the Fianna of early Ireland, the gesith retinues of Anglo-Saxon England, the berserkir and ulfhednar of Norse tradition — combined features of secret societies: oaths of loyalty to a lord, distinctive ritual dress or behavior, and the transmission of esoteric knowledge. The Indo-European Männerbund, or “male league,” has been proposed by the German classical scholar Walter Otto and others as a basic form of archaic secret society, and parallels have been drawn to the warrior brotherhoods of Celtic and Germanic antiquity, the Greek hetairiai, and the early Roman sodalities.

Ancient Egypt and the Temple Schools

The earliest literate civilization of which we have detailed knowledge, ancient Egypt, developed institutions that historians sometimes describe as proto-secret societies. The Houses of Life (per-ankh) attached to the great temples of Heliopolis, Memphis, Thebes, and Hermopolis functioned as repositories of sacred learning, centers of medical and astronomical knowledge, and schools of priestly initiation. Membership in their inner circles was restricted, and the esoteric doctrines taught in the Houses of Life — about the nature of the soul, the structure of the cosmos, the symbolic significance of temple ritual, and the path of the deceased through the underworld — were communicated in stages, with the most sacred teachings reserved for the most advanced initiates.

The Egyptian temple tradition was not clandestine in the political sense. The temples were public institutions supported by the pharaoh, and the priestly hierarchy was a recognized part of the Egyptian state. The secrecy of the temple schools was religious and pedagogical: the doctrines were secret because they were believed to lose their power if exposed to the uninitiated, and the long process of initiation was thought to be necessary to prepare the student to receive the teaching. This pattern — the esoteric transmission of sacred knowledge through a graded, oath-bound hierarchy — would become the basic template of the ancient mystery cults of the Greek and Roman worlds.

The Greek Mystery Cults

The Greek world developed a distinctive and remarkably influential set of secret religious institutions that historians collectively call the mystery cults. The most important of these were the Eleusinian Mysteries, the Dionysian and Orphic traditions, and the Samothracian, Cabirian, and various local mysteries. The Eleusinian Mysteries, celebrated annually at Eleusis near Athens from at least the fifteenth century BCE until 392 CE, were the longest-lived and most prestigious. The cult honored the goddess Demeter and her daughter Persephone, and its central myth was the descent of Persephone into the underworld and her return. The Greater Mysteries, celebrated annually in September, involved a procession from Athens to Eleusis, ritual purification in the sea, fasting, the drinking of a sacred drink called the kykeon, and the revelation of sacred objects (hiera) in the great initiation hall. The content of the revelation was kept secret under severe penalties, and the secrecy was remarkably durable: the cult’s inner teachings have never been fully recovered, despite the participation of many of the leading figures of Greek and Roman intellectual life.

The Dionysian mysteries, the Orphic brotherhoods, and the Samothracian and Cabirian mysteries shared the same basic structure: closed membership, graded initiation, oath-binding, esoteric doctrine, and a promise of a more favorable fate after death. The Greek mysteries, unlike the philosophical schools, were not confined to an intellectual elite; they drew initiates from all social classes, and they served as a kind of religious complement to the public cults of the Greek city-state. The mysteries also functioned as a way of incorporating foreigners — Romans, Egyptians, Persians — into Greek religious life, and the Iobacchoi of Athens, a Dionysiac brotherhood of the second century CE, illustrates the way the mysteries could function as a kind of ethnic and religious fraternity. For a fuller account, see the article on ancient mystery cults.

Pythagoras and the Philosophical Brotherhood

In the sixth century BCE, the philosopher Pythagoras of Samos founded a community in Croton, in southern Italy, that is often described as the first philosophical secret society. The Pythagorean community was a closed, oath-bound brotherhood organized around the study of mathematics, music, and cosmology as paths to spiritual purification. Members underwent a long probationary period, observed dietary restrictions, practiced ritual silence, and submitted to the authority of the master. The Pythagorean community at Croton was attacked and dispersed in the sixth or fifth century BCE, but the Pythagorean tradition continued for centuries, influencing the development of Greek philosophy, music theory, and mathematics, and providing a model for the closed, esoteric community that would be imitated by the Hermeticists and Rosicrucians of the Renaissance and early modern period.

Roman Policy and the Mystery Cults

The Roman Republic and Empire inherited the Greek mystery cults and added their own distinctive institutions. The Roman Senate, which had a long-standing suspicion of unauthorized religious gatherings, periodically intervened against secret religious associations. The most famous early Roman confrontation with a secret society was the suppression of the Bacchanalia in 186 BCE, when the Senate responded to what it regarded as the dangerous expansion of the Dionysiac cult with a decree that prohibited unauthorized Bacchic assemblies and required Senate approval for new cult sites. The Bacchanalia affair established a legal precedent that shaped Roman policy toward secret societies for centuries: any organization that combined secrecy, oath-binding, frequent meetings, and a large membership was liable to be treated as a political threat. For a fuller account of the Roman context, see Secret Societies in Ancient Rome.

The mystery cults flourished in the Roman Empire despite the Senate’s hostility. The Egyptian cult of Isis, the Mysteries of Mithras, the Orphic and Dionysian traditions, and various other mystery religions spread across the empire, drawing initiates from all social classes. The Mysteries of Mithras, in particular, with their seven-grade system of initiation, their mithraea (cave-like temple spaces) scattered across the empire, and their appeal to Roman soldiers and civil servants, are often cited as the most fully developed secret society of the Roman world. The Mithraic graded initiation system is one of the clearest precedents for the degree systems of later Freemasonry.

Early Christianity and the Church as Secret Society

The early Christian communities of the Roman Empire displayed many of the features of a secret society. From the first through the early fourth centuries CE, Christians met in private homes, recited liturgies and prayers in closed gatherings, performed a secret ritual meal (the Eucharist), and recited creeds and texts whose content was not to be revealed to non-members — a practice known as the Disciplina Arcani (discipline of the secret). The Christian movement was bound together by oaths, by a graded process of initiation (catechumenate, baptism, Eucharist), and by an eschatology that involved divine judgment and the imminent end of the world. The Roman state periodically persecuted Christians on charges of atheism, cannibalism, and incest — all of them misreadings of Christian ritual and language — and the persecutions intensified under Decius and Diocletian before Constantine’s Edict of Milan in 313 CE granted Christianity legal toleration.

The transformation of Christianity from a persecuted minority cult into the official religion of the Roman Empire, completed by Theodosius I in 380 CE, was a major turning point in the history of secret societies. As Christianity became the established religion, the older pagan mystery cults were suppressed, and the structural form of the secret society was reabsorbed into the official church. Yet within the church itself, esoteric and mystical traditions continued to develop, and the suppression of heterodox Christian movements — the Gnostics, the Montanists, the Manichaeans, and later the Cathars — produced a new generation of persecuted esoteric communities whose teachings and rituals were transmitted in secret.

The Islamic Brotherhoods

In the Islamic world, the esoteric and fraternal tradition developed in parallel forms. Sufi tariqas (brotherhoods) emerged from at least the eighth century CE and became major institutions of Islamic religious and social life. The Sufi brotherhoods were organized around a master (sheikh or murshid) and a graded system of spiritual advancement, with members taking oaths of obedience and undergoing long periods of initiation. Major Sufi orders of the medieval and early modern periods included the Qadiriyya, the Suhrawardiyya, the Mawlawiyya (the Whirling Dervishes, founded by Rumi), the Naqshbandiyya, the Shadhiliyya, and the Bektashi. The Bektashi order in particular, founded in the thirteenth century, became closely associated with the Janissaries, the elite infantry corps of the Ottoman Empire, and the Bektashi-Janissary relationship illustrates the political dimension that Sufi orders could acquire in certain historical contexts.

A second important strand of Islamic esoteric organization was the Ismaili tradition, which gave rise to the Fatimid caliphate of Egypt, the Assassins of Persia and Syria, and the modern Nizari Ismaili community. The Assassins, founded by Hassan-i Sabbah in the late eleventh century, became the most politically formidable secret society of the medieval Islamic world, and their use of targeted political assassination shaped the European imagination of the secret society for centuries to come. The Assassins are examined in greater detail in the article on medieval secret societies.

The Medieval Craft Guilds and the Origins of Speculative Freemasonry

The European Middle Ages saw the development of the craft guilds, the most important of which for the history of secret societies were the stonemasons’ guilds that built the great Gothic cathedrals of France, England, and Germany. The stonemasons’ guilds were organizations of skilled craftsmen who regulated the practice of their trade, trained apprentices, and supported members in distress. The guilds developed elaborate initiation rituals, secret signs and passwords (so that traveling masons could identify each other), and a graded hierarchy of apprentice, fellow, and master.

The transformation of the operative stonemasons’ guilds into the speculative fraternity of Freemasonry was a gradual process. By the sixteenth and seventeenth centuries, the guilds had begun to admit “accepted” members — gentlemen, scholars, and intellectuals who were not professional masons. The first Grand Lodge of Freemasonry was established in London in 1717, and from England the speculative Masonic tradition spread rapidly across Europe, the British colonies, and eventually the world. The history of secret societies treats the development of speculative Freemasonry as a major turning point, because the Masonic fraternity became the institutional model for the fraternal, esoteric, and political orders of the eighteenth, nineteenth, and twentieth centuries.

The Renaissance Revival of Esoteric Philosophy

The European Renaissance, conventionally dated from the fourteenth to the seventeenth century, transformed the esoteric tradition of the medieval period. The recovery of Greek philosophical and Hermetic texts, the fall of Constantinople and the migration of Byzantine scholars to Italy, the Protestant Reformation, and the early stirrings of the Scientific Revolution combined to produce an intellectual environment in which esoteric and secret organizations flourished. The Italian humanist academies — the Platonic Academy of Florence, founded by Marsilio Ficino under the patronage of Cosimo de’ Medici — the Hermetic revival that Ficino’s translations of the Corpus Hermeticum made possible, the figure of Giordano Bruno, the Rosicrucian manifestos of the early seventeenth century, and the early stages of speculative Freemasonry all belong to this period.

The Rosicrucian manifestos — the Fama Fraternitatis (1614), the Confessio Fraternitatis (1615), and The Chymical Wedding of Christian Rosenkreutz (1616) — are among the most important documents in the history of Western esotericism. The manifestos described a hidden brotherhood of philosopher-sages devoted to the reform of science, religion, and society, and they established a template that the Bavarian Illuminati, the Freemasons, and the various later occult and fraternal orders would consciously imitate. The full story of the Renaissance esoteric revival is told in the article on Renaissance secret societies.

The Enlightenment and the Bavarian Illuminati

The eighteenth century, the age of the European Enlightenment, was also the age in which the modern secret society, in its political and conspiratorial form, emerged most clearly. The most important of the eighteenth-century political secret societies was the Bavarian Illuminati, founded in 1776 by Adam Weishaupt, a professor of canon law at the University of Ingolstadt. Weishaupt explicitly modeled the Illuminati on the Rosicrucian and Jesuit models, and he developed a graded system of initiation, a comprehensive political program of secularism and republicanism, and a doctrine of human perfectibility that drew on the Hermetic, Rosicrucian, and Enlightenment traditions.

The Illuminati were suppressed by the Bavarian government in 1785, but the legends surrounding them — particularly as developed in the works of the Jesuit ex-priest Augustin Barruel and the Scottish physicist John Robison — became the seedbed of the modern conspiracy theories and hidden power narratives. The image of the Illuminati as a small, secret, all-powerful group working behind the scenes to overthrow religion and monarchy has been one of the most durable templates of modern conspiracy theory, and it is examined in Was There a Real Illuminati?. The Illuminati also had a significant influence on the development of continental Freemasonry, and the various Masonic rites and orders of the late eighteenth and nineteenth centuries — the Strict Observance, the Rite of Strict Observance, the Scottish Rite, the York Rite — are unintelligible without the Illuminati context.

Nineteenth-Century Political Secret Societies

The nineteenth century saw a proliferation of political secret societies across Europe and Latin America. The most important was the Italian Carbonari, which built on the older Italian tradition of esoteric and fraternal organization to mount a sustained challenge to the conservative monarchies of the Italian peninsula. The Carbonari were organized in cells called vendas, used coded language, and performed initiation rituals that drew on the Masonic tradition. The Carbonari played a central role in the Italian revolutions of 1820–1821 and 1830–1831, and their members went on to form the Mazzinian societies and the early Italian revolutionary tradition.

Other major nineteenth-century political secret societies included the Greek Philikí Etaireía (Friendly Society), which prepared the ground for the Greek War of Independence against the Ottoman Empire; the Russian Druzhba Narodov and various Decembrist circles; the Polish Patriotic Society; the Young Ireland movement; the various nationalist and revolutionary societies of the 1848 revolutions; and the Fenian Brotherhood in Ireland and the United States. In Latin America, the Logia Lautaro founded by José de San Martín and the various Masonic lodges of the independence-era Latin American republics illustrate the role of secret fraternal organizations in the political upheavals of the period. The common pattern is that wherever public political organization was impossible, secret societies emerged to fill the gap.

The Victorian Fraternal Orders

The nineteenth century was also the great age of the fraternal order. In Britain, the United States, France, and the German states, a vast proliferation of fraternal organizations occurred, many of them modeled on the Masonic pattern but adapted to the specific needs of working- and middle-class members. The Odd Fellows, the Foresters, the Knights of Pythias, the Ancient Order of Hibernians, the Independent Order of Rechabites, the Sons of St. George, the Knights of Columbus, the Benevolent and Protective Order of Elks, and a host of smaller fraternal organizations recruited millions of members in the period between 1840 and 1910. These organizations provided mutual aid (sick benefits, funeral benefits, life insurance), social fellowship, and ritual life to their members, and they were a major institutional form of working-class self-help before the rise of the welfare state. The fraternal orders and lodges are examined in greater detail in a separate article, and the specific case of the Odd Fellows and other lodges illustrates the structure of the Victorian fraternal world.

The American College Secret Societies

The nineteenth century also saw the foundation of the American college secret societies, the most famous of which is Skull and Bones at Yale University, founded in 1832. Skull and Bones, together with the other senior societies at Yale (Scroll and Key, Wolf’s Head, Berzelius), the final clubs at Harvard, and the various fraternities and secret societies at other American universities, formed a network of elite social institutions that have been the subject of extensive conspiracy theorizing and historical scholarship. The reality, as far as it can be reconstructed, is that these societies are primarily elite social and professional networking organizations, but the secrecy of their proceedings and the prominence of their members have made them a focus of public speculation.

The Theosophical Society and the Modern Esoteric Revival

The late nineteenth century saw a major revival of esoteric thought, centered on the Theosophical Society founded by Helena Blavatsky and Henry Steel Olcott in New York in 1875, and on various related organizations. The Theosophical Society drew on the Hermetic tradition, the Rosicrucian tradition, Eastern religious and philosophical traditions, and nineteenth-century spiritualism, and it developed an elaborate cosmology, a graded system of initiation, and a global network of lodges. The Theosophical Society influenced the development of many later esoteric organizations, including the Anthroposophical Society (founded by Rudolf Steiner in 1912), the Arcane School (founded by Alice Bailey), and the various New Age movements of the twentieth century. The Hermetic orders and Theosophical societies are examined in detail in a separate article.

The Twentieth Century: Thule, Vril, and the Far-Right Esoteric

The twentieth century produced a particularly dark chapter in the history of secret societies, in the form of the German völkisch and occult movements that helped to shape National Socialism. The Thule Society, founded in Munich in 1918, was an arische (Aryan) occult order that combined theosophical, Rosicrucian, and Ariosophical doctrines with German nationalist and antisemitic politics. The order was closely connected to the German Workers’ Party, the precursor of the Nazi Party, and several of its members, most notably Rudolf von Sebottendorff, played significant roles in the early history of the Nazi movement. The Vril Society, the Edda Society, and the various other esoteric-nationalist groups of the Weimar period illustrate the way the tradition of secret esoteric orders could be turned to political ends.

The dark side of the twentieth-century esoteric tradition is not limited to the German context. Various other political and quasi-religious secret societies of the interwar period — the Romanian Iron Guard and its Legion of the Archangel Michael, the Italian Fascist occultists, the French synarchist movement, the various esoteric orders that flourished in the United States and Britain in the early twentieth century — illustrate the continuing political and ideological use of secret-society forms.

The Cold War and the Post-War Era

The Cold War period produced its own distinctive forms of secret organization, most of them governmental rather than private. The intelligence agencies of the major powers — the CIA, MI6, the KGB, the BND, the Mossad — were secret organizations in the technical sense, and their activities were concealed from public view. The MK-Ultra program, a CIA research program into mind control and behavioral engineering that ran from the 1950s to the 1970s, is an extreme case of a state-sponsored secret program that operated outside the normal legal and ethical constraints of a democratic society. The declassification of MK-Ultra documents in the 1970s revealed a program of drug experimentation, interrogation, and manipulation that, if it had been carried out by a private organization rather than a government agency, would have been the basis for a major criminal prosecution.

The post-war era also saw the foundation or refoundation of various traditional fraternal and esoteric orders, including the Rosicrucian order AMORC, the various Theosophical and Anthroposophical organizations, the Bavarian Illuminati-descended orders, and a host of smaller esoteric and fraternal bodies. The American college secret societies continued to flourish, and the political networks of the American elite continued to be the subject of conspiracy theories and hidden power narratives. For the American side of this story, see college secret societies, Skull and Bones, and Bohemian Grove explained.

The Modern Conspiracy-Theoretical Landscape

The late twentieth and early twenty-first centuries have been characterized by an explosion of conspiracy theories and hidden power narratives centered on alleged secret societies. The most prominent of these narratives concern the Illuminati and the so-called New World Order, the Bilderberg Group, the deep state and secret societies, the supposed control of the entertainment industry by Illuminati symbols in pop music, the alleged hidden symbols of secret societies on US currency, and a wide range of antisemitic and anti-Masonic conspiracy theories. The eye of providence and other Masonic symbols are read by conspiracy theorists as evidence of secret control; the all-seeing eye has been particularly subject to this kind of speculative interpretation.

The actual evidence for most of these conspiracy theories is weak, and the scholarly consensus is that most of the alleged secret networks do not exist in the form claimed. The Bilderberg Group is a real annual conference of senior politicians, businessmen, and cultural figures, but it does not have the kind of centralized authority that conspiracy theories attribute to it. The Bavarian Illuminati was a real eighteenth-century order, but it was suppressed in 1785 and never reconstituted. The deep state and secret societies question is more complex, but the evidence for the kind of unified, secret, all-powerful conspiracy that most conspiracy theories posit is not there.

The Persistence of the Fraternal and Esoteric Tradition

The fraternal order, the esoteric order, and the elite network continue into the twenty-first century, in diminished form. Freemasonry has an estimated two million members worldwide. The Rosicrucian order AMORC, the Theosophical Society, the Anthroposophical Society, the various Hermetic and ceremonial magic orders, the Odd Fellows and other lodges, and a long list of smaller fraternal and esoteric organizations still operate. The college secret societies of the American elite universities continue to recruit new members, and the secret handshakes and signs of the fraternal orders continue to be practiced. The esoteric traditions and mystical orders of Europe, the Middle East, and Asia continue to transmit teachings whose roots go back to the ancient mystery cults.

The reason for the persistence is not mysterious. The fraternal order provides belonging, ritual, mutual support; the esoteric order provides a community of shared inquiry; the elite network provides a forum for the exchange of information and favors. The reasons secret societies have been formed are practical, and the practical reasons continue to operate. The closed, oath-bound, hierarchical group is a remarkably durable social form, and the history of secret societies is, in this sense, not over.

Sources and Further Reading

The standard scholarly surveys are J.M. Roberts, The Mythology of the Secret Societies (1972); Reinhold Reith, Geheime Bruderschaften (2006, in German); and the multi-author Companion to Secret Societies (2006), edited by Markus Dunn. For Freemasonry specifically, David Stevenson, The Origins of Freemasonry (1988) and Margaret Jacob, The Origins of Freemasonry: Facts and Fictions (2006), are the canonical modern accounts. For the esoteric tradition, Wouter Hanegraaff, Western Esotericism: A Guide for the Perplexed (2013). For conspiracy theory as a historical phenomenon, Michael Barkun, A Culture of Conspiracy (2003).

For the most influential individual groups, see the articles on Freemasonry, the Bavarian Illuminati, the Knights Templar, the Rosicrucians, and Skull and Bones. For the question of origins, see What Was the First Secret Society in History? and Why Were Secret Societies Formed?. For the modern political context, see Bilderberg Group agenda, Who Really Rules the World?, and the New World Order. The broader intellectual and ritual context is examined in symbols, rituals and initiation, and the fraternal order as an institutional form is treated in fraternal orders and lodges.