Oneiroi

Nature and essence

The Oneiroi are the primordial personifications of Dreams. Children of Hypnos, Sleep, they embody the many forms taken by nocturnal visions: divine messages, deceptive illusions, premonitions, or fleeting images without consequence.

They dwell in the dark realm of Hypnos, in a region set apart from the world, where dreams are formed before being sent to mortals.

Typology of dreams

In certain traditions, the Oneiroi are divided into two symbolic categories:

• those who pass through the gate of horn: truthful dreams, bearers of authentic messages;
• those who emerge from the gate of ivory: deceptive, confused, or misleading dreams.

Poets sometimes give specific names to certain Oneiroi, such as Morpheus, who shapes dreams in human form, Phobetor, responsible for frightening visions, and Phantasos, who produces unreal or supernatural apparitions.

Cosmological and literary role

The Oneiroi do not intervene directly in mythological narratives, but their influence runs throughout Greek literature. They act as mediators between gods and mortals when messages are conveyed through dreams, and as the artisans of nocturnal illusion.

Their existence reflects the Greek conviction that dreams are an ambiguous realm, neither wholly illusion nor wholly truth.

Iconography

The Oneiroi are rarely represented individually. In later art, they appear as winged, elegant, shadowy figures, sometimes wrapped in veils or mist that symbolize the unreality of nocturnal visions.