Neoplatonism

Plotinus, the founder (c. 204/5–270 CE). Neoplatonism begins with Plotinus, who taught in Rome and whose writings were collected after his death by his student Porphyry into the Enneads — fifty-four treatises arranged into six groups of nine (“ennead” = group of nine), the deliberate numerology giving the work its name. The Enneads are the foundational text of the entire tradition.

• Iamblichus and the theurgic turn (c. 242–325 CE). Iamblichus, a student of Porphyry, reoriented the school. Where Plotinus held that the highest part of the soul never wholly descends into matter and can ascend by pure contemplation, Iamblichus argued the soul is fully embodied and cannot lift itself out by thought alone — it needs theurgy (“divine work”): sacred ritual, invocation, and symbol through which the gods draw the soul upward. This is the central fork in the tradition (see the note on the evidence).
• Proclus, the systematizer (412–485 CE). The last great Neoplatonist of Athens, Proclus, treated Iamblichus as authoritative and fused the two streams: philosophy and theurgy as “two sides of one coin,” both needed for ascent. His vast, geometric systematizations carried Neoplatonism into Byzantine and medieval thought.
• Renaissance revival (15th c.). Marsilio Ficino translated the Corpus Hermeticum (1463) and then the complete Enneads of Plotinus into Latin (completed c. 1484–1492) for the Medici, putting Plotinus into direct European circulation for the first time and igniting the Renaissance Neoplatonic-Hermetic revival that shaped Pico della Mirandola and beyond.

A note on the evidence (important). “Neoplatonism” is a modern label for a tradition that called itself simply Platonism. It is a later systematization of Plato, not Plato’s own teaching: Plotinus wrote some six centuries after Plato (c. 428–348 BCE) and developed the One, the emanation hierarchy, and the mystical ascent far beyond anything explicit in Plato’s dialogues. Treat it as a brilliant interpretation of Plato, not as Plato himself. Note too the genuine Plotinus-vs-Iamblichus split: contemplative ascent (the soul rises by knowing) versus theurgic ritual (the soul rises by sacred work). Later Christian and esoteric readers often blurred these; this Atlas keeps them distinct.

The One / the Good. Beyond being, beyond thought, beyond name — the absolutely simple source from which all multiplicity flows. It is not a being among beings but the ground of all being. (→ All Is One, Consciousness Is Fundamental.)

• Emanation (procession). Reality unfolds without diminishing its source, as light from the sun: One → Nous (Intellect) → Soul → Cosmos. Each level is a less unified image of the one above. (→ The Inner Creates the Outer — the levels mirror each other, “as above, so below.”)
• The return / ascent (epistrophē). Everything that proceeds from the One also yearns back toward it; the soul’s deepest movement is the turn homeward, retracing the levels up to union with the One. (→ All Is One — the goal is already the source of the seeker.)
• Contemplation. For Plotinus the engine of ascent is theōria — inward, wordless contemplation that purifies the soul and lifts attention from the many to the One, culminating in rare moments of union. (→ All Is One, All Is One.)
• Theurgy (Iamblichus). The alternative engine: ritual, symbol, and invocation as the divinely-given means by which the gods raise an embodied soul that cannot raise itself. The philosophical charter for sacred ritual in Western esotericism. (→ All Is One.)
• The undescended self. The highest part of the soul is already one with Nous and never fully falls — so the divine is not far off but the very root of one’s own awareness. (→ All Is One.)

Plotinus (c. 204/5–270 CE) — the founder; the Enneads are his collected work.

• Iamblichus (c. 242–325 CE) — the theurgic turn; On the Mysteries defends ritual ascent.
• Porphyry (c. 234–305 CE) — Plotinus’s student and editor; he arranged and published the Enneads and wrote the Life of Plotinus. (In prose; no node yet.)
• Proclus (412–485 CE) — the last great Athenian Neoplatonist who systematized the whole tradition. (In prose; no node yet.)
• Marsilio Ficino (1433–1499) — the Renaissance translator who returned Plotinus to the West. (In prose; no node yet.)

Neoplatonism is one of the sharpest statements of several Atlas truths: All Is One all is one (the One/the Good as the single source of all), Consciousness Is Fundamental consciousness/mind is fundamental (Nous as the first reality after the One), All Is One the seeker is what they seek (the soul ascends to a One it already secretly carries), All Is One the deeper Self (the undescended soul, continuous with the divine), All Is One inner gnosis (ascent by contemplation or theurgy), and The Inner Creates the Outer as above so below (the graded mirror of the emanation levels). A reader can drop from any of these truths back into this root.

Grew from / alongside: Plato (six centuries earlier), Middle Platonism, Aristotle and Stoic elements absorbed into the system, and the same Hellenistic-Egyptian milieu that produced Hermeticism and Gnosticism — contemporaneous currents sharing emanation, ascent, and the divine spark/source within., Seeded: Christian mysticism (through Pseudo-Dionysius, Augustine, and the whole apophatic “negative theology” of the ineffable One), Kabbalah (the emanationist structure of the sefirot echoes the Neoplatonic procession), Islamic philosophy, and — via Ficino’s Renaissance revival — Western magic, Hermetic philosophy, and ultimately the idealist and mind-power currents that run down to modern manifestation thought.,