Boundaries Dissolving: The Secret Power of the Eleusinian Mysteries

by Gary Borjesson

In my essay, On the Eleusinian Mysteries, I described the origin story of the Mysteries and what we know about the rites of initiation, which lasted as long as nine days. Here I will focus on the role of the psychedelic kykeon, and how this contributed to the flowering of philosophy, science, and art in ancient Greece and Rome.

A votive plaque known as the Ninnion Tablet depicting elements of the Eleusinian Mysteries, discovered in the sanctuary at Eleusis (mid-4th century BC)

1. The heart of the mysteries

At the heart of the Mysteries was an initiatory experience, not a teaching. In other words, you couldn’t gain what the mysteries had to offer by hearing about it from someone who had been initiated, even if they would tell you—which they wouldn’t because the punishment for speaking about details was death. The experience was life-changing. Cicero, an initiate, wrote that “by their means we have been brought out of our barbarous and savage mode of life….and have gained the power not only to live happily, but to die with a better hope.”

The key experience that the Mysteries facilitated is boundary dissolution. The teaser with which I ended the first essay points to this: the experience of the Mysteries was open to everyone, regardless of the conventional identities that bound them—man or woman, slave or free, citizen or foreign worker. Even if you tried to hold on to your identity, say, as a high-born Athenian statesman, the rites of initiation promised to dissolve this limited view of yourself. Moreover, it’s not just social identities that are loosened, it’s the boundary between the living and the dead, and between the human and the divine.

As the origin story suggests, boundary crossings are at the heart of the Mysteries. In that story Hades crosses the boundary from the Underworld, abducting Demeter’s daughter, Persephone, and carrying her back to the Underworld. Demeter’s scorched-earth grief leads Hades to release Persephone, who then crosses back from the dead to the living. Her journey is memorialized each year, for Persephone’s return to the land of the living brings spring and its promise of rebirth. Read more »

Friday, March 6, 2026

On the Eleusinian Mysteries

by Gary Borjesson

Among the many excellent and indeed divine institutions which Athens has brought forth and contributed to human life, none, in my opinion, is better than those mysteries. For by their means we have been brought out of our barbarous and savage mode of life and educated and refined to a state of civilization; and as the rites are called “initiations,” so in very truth we have learned from them the beginnings of life, and have gained the power not only to live happily, but also to die with a better hope. —Cicero

Kernos, a vessel for the Eleusinian ceremony (Museum of Eleusis)

There is something astonishing, and mysterious, about the flowering of human culture, wherever it happens. I think of ancient China, India, Greece, and the Abbasid Caliphate (centered in Baghdad from the 8th to 10th centuries CE), which extended Greek philosophy and science, in addition to making original contributions of its own. What bloomed in ancient Athens and spread through Greece and the Roman world was an extravagant flowering of philosophy, mathematics, science, art, and political government that became the foundation of western civilization.

This essay explores the Eleusinian Mysteries, which played a key role in that flowering, as Cicero and many others observed. Sophocles said of his experience: “Thrice happy are those mortals who, having seen those rites, depart for Hades; for to them alone is granted to have a true life there.”

Such extravagant praise makes it curious that, while the importance of the Mysteries is widely acknowledged, their deeper significance is often neglected or ignored altogether in academic quarters. It’s even more curious when you learn that its initiates included Socrates, Plato, Aristotle, Sophocles, Pindar, among other famous Greeks; and Romans such as Augustus Caesar, Cicero, Hadrian, and Marcus Aurelius. These rites spanned more than a millennium, dating back to at least the 7th century BCE. (Some archaeological evidence suggests they may be far more ancient, extending as far back as 1500 BCE.) Emperor Theodosius destroyed the temple and the rite around 392 CE, as part of the larger Edict of Thessalonica (380 CE), which made Christianity the official religion of Rome, and prohibited all pagan rites or worship.

Many leading Greek and Roman thinkers, artists, and politicians made the pilgrimage to Eleusis. Yet we come closer to the heart of the Mysteries when we learn that initiation into the Mysteries was open to everyone: man or woman; citizen or foreign worker; free or slave; black, brown or white. We’ll come back to this. But first let’s start with the origin story of the mysteries. Then we’ll sketch what initiation involved, including, as the evidence suggests, the ritual use of a psychoactive substance at its center. Read more »