Eidos — the Greek term for ‘form,’ ‘shape,’ or ‘idea’ — occupies a contested but structurally pivotal position within the depth-psychology corpus. Its principal gravity comes from its Platonic and Aristotelian inheritances: as Platonic Idea, eidos names the eternal, intelligible archetype standing behind phenomenal particulars; as Aristotelian form, it denotes the immanent organizing principle realized within matter. Both valences are consequential for psychological theory. Edinger’s Jungian readings of ancient philosophy treat eidos and eide as the philosophical antecedents of the archetype, tracing the lineage from Plato through Aristotle to the modern psychology of the unconscious. Jung’s own index citation of eidos in Aion confirms its quiet presence within his systematic vocabulary. Hillman’s archetypal psychology inherits the Platonic lineage most deliberately, grounding the universality of archetypal images in the Neoplatonic doctrine that a form is simultaneously individual and world-soul. Havelock contributes a culturally diagnostic reading, arguing that eidos as ‘species’ becomes conceptually available only through the abstracting power of alphabetic literacy. Moore’s Ficinian study locates eidos within Renaissance Neoplatonic cosmology as a technical soul-concept. Across these voices, the unresolved tension is between eidos as transcendent ontological given and eidos as immanent psychological structure — a tension that defines the fault line between classical Jungian and post-Jungian archetypal thought.
eidos/eide (form, idea), 57, 60-61, 67, 70, 101, 108. See also Aristotle; Plato
Edinger’s index entry formally establishes eidos/eide as a central technical concept in his reading of early Greek philosophy, cross-referencing both Plato and Aristotle as the term’s twin sources.
, The Psyche in Antiquity, Book One Early Greek Philosophy thesis
species, equivalent to eidos, 262; not in Homer, 31044
Havelock argues that eidos as an abstract categorical term equivalent to ‘species’ is a conceptual achievement of literate Greek thought, absent from Homeric oral culture.
, Preface to Plato, 1963thesis
Eidos, 51
Moore’s index locates eidos as a technical term within Ficino’s Neoplatonic psychology of the soul, embedding it in the Renaissance cosmological framework that archetypal psychology inherits.
, The Planets Within: The Astrological Psychology of Marsilio Ficino, 1982supporting
eidos, 34
Jung’s own index reference in Aion confirms that eidos operates as a recognized technical term within his systematic depth-psychological vocabulary, situated alongside kindred metaphysical concepts.
, Aion: Researches into the Phenomenology of the Self, 1951supporting
Eidos: 43ge2; 44008; 5(^4 ; 580CI3. Genos: 44106; 441CI9; 442b2; 443CI3; 444b5
Hobbs’s critical apparatus documents eidos and genos as the primary Platonic terms marking the divisions of the tripartite soul in the Republic, situating the term within Plato’s formal psychology.
, Plato and the Hero: Courage, Manliness and the Impersonal Good, 2000supporting
slSos (eidos), 465-6
Onians indexes eidos within his lexical study of early Greek thought about body and mind, indicating the term’s role in pre-philosophical and early philosophical vocabularies of form and appearance.
, The origins of European thought about the body, the mind,, 1988supporting
the universals problem for psychology is not whether they exist, where, and how they participate in particulars, but rather whether a personal individual event can be recognized as bearing essential and collective importance
Hillman reformulates the Platonic universals problem — classically inseparable from the doctrine of eidos — as a psychological question about the archetypal resonance of individual experience.
, Archetypal Psychology, 1983supporting
the universals problem for psychology is not whether they exist, where, and how they participate in particulars, but rather whether a personal individual event can be recognized as bearing essential and collective importance
Hillman’s parallel formulation translates the Platonic eidetic question into the psychological register, asking how particulars bear universal archetypal significance rather than where forms ontologically reside.
, Archetypal Psychology: A Brief Account, 1983supporting
only when a qualitative term is written down does it become ponderable as a fixed form independent of both the speakers and of situations
Abram argues that the abstracting capacity of the Greek alphabet made it possible to hypostatize qualities as fixed forms — the cultural-cognitive precondition for the Platonic theory of eidos.
, The Spell of the Sensuous: Perception and Language in a More-Than-Human World, 1996supporting
peerless in him the beauty: Tw 0’ lip’ €7r’ . , aVTll<’ g7rEtTa 7 ]aVlCT¢Vp[ o~] WPIIVTO a great throng stood round about her as she gazed
A Hesiodic fragment employing eidos in its archaic pre-philosophical sense of visible form or beauty, illustrating the term’s usage before its Platonic philosophical elevation.
, Hesiod, the Homeric Hymns, and Homerica, -700aside