Late Antiquity · 3rd c.

Plotinus

فلوطینc. 204–270Neoplatonism

Plotinus taught that all reality flows from the One, beyond being and thought, through Intellect and Soul down to matter. The soul's task is to turn inward and return to its source.

Central question: How does the many come from the One, and how can the soul return to it?
Method: Plotinus presents his philosophy as exegesis of Plato: he raises puzzles about the soul, intellect and the One, works them out by dialectic, and treats the argument as preparation for an inward ascent that ends beyond discursive thought. How Plotinus works

to hen the One nous Intellect psychē Soul proodos / epistrophē procession henōsis union

Stated in the text 7
Scholarly consensus 10
Contested reading 3

2 arguments1 work0 quotations checked word for word0 of 22 positions and arguments reviewed by an expert

Answers 19 of 20 questions · does not address 1Why some questions don’t apply

Metaphysics

Being and realityThe One beyond being

What truly is flows from the One, which is simple, beyond being and beyond thought; from it proceed Intellect, which is being and the Forms, and Soul, which orders the sensible world down to matter.

Stated in the textto hen, nous, psyche, epekeina tes ousias, proodosDraft — not yet reviewed

Enneads V.2.1 · Enneads V.4.1 · Enneads VI.9.3

UniversalsRealism before things

The shared characters of things are Forms that exist before and apart from sensibles, not as separate objects but as the thoughts that make up divine Intellect. They do not depend on any human mind.

Scholarly consensuseide, nous, ta noetaDraft — not yet reviewed

Enneads V.9.5–8 · Enneads V.5.1–2

Plotinus also argues for Forms of individuals (V.7), which goes beyond realism about universals; how consistently he holds it is disputed: Rist (1963) takes it as his view, Blumenthal (1966) doubts it is settled doctrine.

God and the fundamentalBeyond being

There is a first principle, the One or the Good, but it is beyond being, thought and every predicate; we say what it is not, and reach it in union rather than in knowledge, so even "it exists" applies to it only improperly.

Stated in the textto hen, to agathon, epekeina, henosis, hoionDraft — not yet reviewed

Enneads VI.9.3 · Enneads V.3.13 · Enneads VI.8.13

Plotinus does argue that a simple first principle must precede all multiplicity (V.4.1), so reason establishes that the One is, while denying that it can say what it is.

Soul and bodySeparable soul

The soul is an incorporeal substance that cannot be a body or the form of a body; the body is rather in the soul than the soul in the body, and the true self stays above the living compound that soul's image forms with the body.

Scholarly consensuspsyche, soma, to koinon, ousia asomatosDraft — not yet reviewed

Enneads IV.7.2–8 · Enneads IV.3.9 · Enneads I.1

"Separable soul" fits, but Plotinus' soul is not a Cartesian mind: it pervades and animates the body as a whole, and he rejects the Aristotelian entelechy view explicitly.

Death and immortalityThe soul is immortal

The soul is immortal because it is incorporeal and akin to the divine; individual souls remain distinct even in the intelligible world, though they pass through other lives.

Stated in the textathanasia, psycheDraft — not yet reviewed

Enneads IV.7.9–15 · Enneads IV.3.5

The purified soul in the intelligible keeps no memory of its earthly life (IV.4.1), which brings him near the `intellect-only` option for the person with memory and character.

The cosmosEternal but produced

The cosmos has no beginning in time and will never end, yet it is not self-standing: it is eternally produced from the higher principles, as light from a source, without deliberation or a decision to make it.

Stated in the textkosmos, proodos, aidiosDraft — not yet reviewed

Enneads II.9.3 · Enneads III.2.1

Freedom and determinismFreedom as rational self-determination

Freedom is not the power to choose otherwise but acting from intellect without being driven by passion or outer circumstance; what is "up to us" is virtue and intellect, and the One is free in the highest degree as wholly its own.

Stated in the textto eph' hemin, autexousion, boulesisDraft — not yet reviewed

Enneads VI.8.1–7 · Enneads VI.8.7–21 · Enneads III.1.8–10

VI.8.1–7 treats human freedom, VI.8.7–21 (esp. 13–21) the One's. Readers will set against this the soul's descent, both voluntary and necessary (IV.8.5), and his rejection of Stoic and astral determinism (III.1.2–7).

CausationCauses necessitate

Everything after the One proceeds from it, as light from the sun or heat from fire: each perfect thing produces an image of itself without willing or changing, and the One cannot remain alone. Each level causes the next by its own activity and contemplation; nothing lower acts on what is higher. Against atomists and Stoics he denies that bodily causes or a single chain of fate explain all, since soul is a principle and cause in its own right.

Another reading. Gerson ("Plotinus's Metaphysics: Emanation or Creation?", 1993) argues from VI.8, where the One is what it wills to be, that its causing is willed rather than necessary, so "necessary emanation" is misleading.

Contested readingEnneads (V.1, V.2, V.4, IV.8, III.1–2; VI.8 on the One's freedom)proodos, energeia tes ousias, energeia ek tes ousias, aitia, heimarmene, pronoia, archeDraft — not yet reviewed

Enneads V.1.6 · Enneads V.4.1–2 · Enneads V.2.1 · Enneads IV.8.6 · Enneads III.1.1–10 · Enneads III.2.1–3 · Enneads VI.8.7–21

The One is not under necessity; it is the cause of necessity (VI.8). What necessitates is the perfection of each producer, not a law over it, and Plotinus has no doctrine of the possible in itself.

Epistemology

Sources of knowledgeReason alone · Illumination from a higher intellect

Knowledge is stable because its objects are the Forms, which are the very content of Intellect; a part of our soul never descends and always thinks there, and we know by turning inward to it. Discursive reason judges by imprints it receives from Intellect above, while sense perception is only a messenger reporting from below.

Scholarly consensusnous, noesis, dianoia, aisthesisDraft — not yet reviewed

Enneads V.3.3 · Enneads IV.8.8 · Enneads V.5.1–2

Both codes describe one doctrine from different sides: our own highest intellect is undescended (reason), yet it is Intellect, a hypostasis above the individual soul, that gives discursive reason its light (illumination).

Certainty, doubt and the limits of knowledgeYes

Questioning stops in Intellect, whose knowledge is infallible because it is identical with its objects and needs no premise or proof from outside. The soul reaches this certainty by rising to Intellect, though the One beyond Intellect is beyond knowledge altogether.

Scholarly consensusnous, episteme, aletheiaDraft — not yet reviewed

Enneads V.5.1–2 · Enneads V.3.5

Certainty is a feature of Intellect's self-knowledge; the One is grasped by union, not by knowledge (V.3.13; VI.9.4).

Innate knowledgeInnate knowledge

The soul already has the intelligibles within it, since its highest part remains in Intellect; we fail to notice them because our attention is turned to the senses, and learning is a turning back to what we possess.

Scholarly consensusnous, logoi, epistropheDraft — not yet reviewed

Enneads V.1.10–12 · Enneads IV.8.8

TruthTruth as a feature of being

Truth in the full sense is not the agreement of a thought with something outside it but Intellect's identity with the beings it thinks; it agrees with nothing but itself. Statements of discursive reason are true only derivatively.

Stated in the textaletheia, nous, ta ontaDraft — not yet reviewed

Enneads V.5.1–2

Epistemic justificationKnowledge by presence or identity

If Intellect knew its objects through impressions received from outside, it could never be sure it had them and would have only images; so true Intellect must be its objects, and its knowledge is certain because knower and known are one. Truth there agrees not with something else but with itself. Discursive reasoning and sense depend on this, and the One beyond Intellect is reached by a presence higher than knowledge.

Scholarly consensusEnneads V.5 (32), V.3 (49), VI.9 (9)nous, noēsis, typos, alētheia, parousiaDraft — not yet reviewed

Enneads V.5.1–2 · Enneads V.3.5 · Enneads VI.9.4

Plotinus answers what makes knowledge secure, not what justifies a belief; human souls have this knowledge only by turning to Intellect, while their own discursive judgments are secured by "imprints" from above, which is close to `illumination` (coded for him under epi.source).

Axiology

The highest goodContemplation

Well-being belongs to the life of intellect, which the wise person can have whatever befalls the body; its summit is the soul's union with the One, reachable briefly in this life.

Scholarly consensuseudaimonia, theoria, henosisDraft — not yet reviewed

Enneads I.4.4 · Enneads VI.9.9–11 · On the Life of Plotinus and the Order of His Books 23

Union with the One is strictly beyond contemplation, since the One is beyond thought; v1.1 `contemplation` includes union for this reason.

The basis of moralityVirtue

Right action comes from virtue, whose aim is to become like god: civic virtues measure the passions, and higher, purificatory virtues free the soul from the body and turn it to Intellect.

Scholarly consensusarete, homoiosis theoi, katharsis, politikai aretaiDraft — not yet reviewed

Enneads I.2.1–7

The goal is assimilation to god rather than a good human character, which the codebook's `virtue` definition does not capture.

Virtue and knowledgeKnowledge plus habituation

At the civic level virtue is a trained measure of desire guided by reason, so one can fail through the passions; at the higher level wisdom is the contemplation of what Intellect contains.

Another reading. The higher virtues that alone make one godlike are forms of intellectual vision, and vice is the soul's ignorance of itself, so the considered view is Socratic intellectualism.

Contested readingpolitikai aretai, kathartikai aretai, phronesis, sophiaDraft — not yet reviewed

Enneads I.2.1–7

His graded virtues cut across the options; the coding records the civic level.

The state and legitimacyNot addressed

Not addressed. No layer states a view on the best order. The Enneads treat civic life only as the setting of the civic virtues (I.2). Porphyry (Life 12) reports a project, not a view: Plotinus asked Gallienus to refound a ruined Campanian city as Platonopolis, whose people would live under Plato's Laws; the emperor was willing, but courtiers blocked it out of jealousy or spite. The report says nothing on why that order, itself second-best in the Laws, would be best, so it is noted here, not coded.

Plotinus wrote nothing on the best political order; civic life matters to him only as the setting of the lower, civic virtues.

Another reading. O'Meara, Platonopolis (2003), reconstructs a Neoplatonic political philosophy from the civic virtues (I.2) and the Platonopolis project: political life is a first stage in assimilation to god, so "no political theory" understates what Plotinus implies.

Contested readingDraft — not yet reviewed

On the Life of Plotinus and the Order of His Books 12 · Enneads I.2.1–7

Beauty and artBeauty as ascent

Bodily beauty is the shining of form through matter and calls the soul upward to the beauty of virtue, of Intellect and finally of the Good. The arts do not merely copy visible things but go back to the forming principles from which nature itself derives.

Stated in the textkallos, eidos, anagogeDraft — not yet reviewed

Enneads I.6.1–9 · Enneads V.8.1

V.8.1 (Pheidias made his Zeus as Zeus would look if he chose to appear) answers Plato's charge that art is a copy of a copy, without any option for that rehabilitation.

JusticeOrder of the soul

Plotinus takes over Plato's definition: civic justice is each part of the soul doing its own work in ruling and being ruled. Above it stands a purified justice, the soul's own activity turned towards Intellect, and in Intellect justice is simply its own work without parts to order. The order of the universe is also just, since providence assigns souls the lives their former deeds deserve.

Scholarly consensusEnneads I.2 (On Virtues); III.2–3 (On Providence)dikaiosyne, oikeiopragia, politikai aretai, katharseis, AdrasteiaDraft — not yet reviewed

Enneads I.2.1 · Enneads I.2.6–7 · Enneads III.2.13

The option fits the civic level only; Plotinus' higher justice is a self-relation of the soul to Intellect, not an order among its parts. Cosmic justice belongs with ont.cosmos and providence.

The nature of valueThe Good beyond being

The Good is the first principle, beyond being and intellect, from which all things have their being and toward which they all strive. Each thing's good is its proper activity and its turning toward what is above it. Things are not good because they are desired; they are desired because something of the Good is present in them, while the Good itself lacks nothing. Evil is matter, the absolute lack of measure and form.

Scholarly consensusto agathon, to hen, epekeina ousias, ephesis, sterēsisDraft — not yet reviewed

Enneads I.7.1 · Enneads I.8.2–5 · Enneads V.5.12 · Enneads VI.7.18–25

Coded on the Good (to agathon). Unlike convertible-with-being, the Good is above being, and goodness in beings is a trace of it.

contested reading · open a row for the explanation and its sources

Method روش و شیوه اندیشه‌ورزی فلسفی

Plotinus presents his philosophy as exegesis of Plato: he raises puzzles about the soul, intellect and the One, works them out by dialectic, and treats the argument as preparation for an inward ascent that ends beyond discursive thought. His treatises grew out of seminar discussion and were later arranged by his pupil Porphyry into six groups of nine.

Posing questions

A treatise usually opens with a problem (aporia), often taken from a passage of Plato or a question raised in his school: how the soul descends into body, how the many come from the One, whether the intellect knows itself. Porphyry reports that Plotinus wrote on subjects that arose in the course of his seminars. Behind the particular problems stands one question, how the soul can return to its source, which gives the inquiry its direction.

Enneads IV.8.1 · Enneads V.1.1 · Enneads V.3.1 · On the Life of Plotinus and the Order of His Books 4–5

Arguing and justifying

Plotinus calls dialectic the most valuable part of philosophy: not a set of rules but the capacity to say what each thing is and how it differs from others, reaching up to the Good. He argues by distinguishing senses of a term, by objections and replies within the text, and by reasoning back from the many to the prior unity they require. Such argument can lead to the One but not grasp it; the One is reached by a presence higher than knowledge, and the final instruction is to take away everything.

Enneads I.3.4–5 · Enneads VI.9.1–3 · Enneads VI.9.4 · Enneads V.3.17

Criticising rival views

He holds that his views are not new but an interpretation of what Plato said long ago, and he reads earlier philosophers for how far they reached the truth. He examines Aristotle's and the Stoics' categories at length and finds them unfit for the intelligible world, and argues against the Stoic and Epicurean view that the soul is a body. Against the Gnostics, some of them in his own circle, he defends the goodness of the cosmos and accuses them of distorting Plato.

Enneads V.1.8 · Enneads III.7.1 · Enneads VI.1–3 · Enneads IV.7.2–8 · Enneads II.9.6

Reason, experience and other ways of knowing

Discursive reasoning (dianoia) goes step by step from premise to conclusion, while intellect (nous) holds its objects all at once; he compares the latter to the Egyptian sages' images, each of which is a whole knowledge at a glance. Beyond both is the union with the One, reached by inward turning and purification rather than inference, which Porphyry says Plotinus attained four times while he knew him. Reason is not set aside on this view; it prepares the soul and is surpassed at the summit.

Enneads V.8.6 · Enneads I.6.9 · Enneads VI.9.9–11 · On the Life of Plotinus and the Order of His Books 23

Language and style

The treatises are compressed and conversational, full of imagined objections ("but someone may say") and sudden returns to an earlier point. Porphyry says that Plotinus wrote out a thought once, as if copying from a book in his mind, and never revised or reread for spelling, and that his seminars mixed reading of commentaries with free discussion and questions. Porphyry later edited the fifty-four treatises and grouped them by subject into six Enneads, from ethics to the One, rather than in the order of writing.

On the Life of Plotinus and the Order of His Books 8 · On the Life of Plotinus and the Order of His Books 13–14 · On the Life of Plotinus and the Order of His Books 24–26

Across the works

All the treatises are in one work, the Enneads, so the change is between periods of writing, which Porphyry's chronological list allows us to trace. He groups them as twenty-one written before Porphyry joined the school, twenty-four written during his six years with Plotinus in Rome, and nine from the last years, sent to him in Sicily, which he judged weaker. The middle period includes the long, closely argued treatises that Porphyry divided into several parts (on problems of the soul, on the kinds of being, on omnipresence), while several early ones are short sketches of the ascent.

On the Life of Plotinus and the Order of His Books 4–6 · Enneads VI.4–5

dialektikē, aporia, exēgēsis, dianoia, nous, epistrophē, henōsis, aphele panta

Arguments

The first principle must be one and beyond IntellectThe first principle is the One, prior to Intellect and beyond being and thought; it can be indicated only by negation and reached by union.

1Everything that exists is something only by being one; a thing that loses its unity ceases to be what it is.
2Whatever is many or composite depends on something prior to it that is simpler.
3Intellect is not simple, since in thinking it is both thinker and thought, and what it thinks is many Forms.
4So the principle prior to Intellect must be wholly simple, without even the duality of thinking and being thought.
5What is wholly simple cannot have any predicate, including being, which belongs to Intellect.
∴The first principle is the One, prior to Intellect and beyond being and thought; it can be indicated only by negation and reached by union.

Aristotle objects. (Earlier view that Plotinus argues against, V.3.11–13.) The highest principle is an intellect that thinks itself, and its thinking is the best and most self-sufficient life; self-thinking involves no composition, so there is no need to go beyond it.

Thomas Aquinas objects. (Applied; Aquinas knew this doctrine only through intermediaries such as the Book of Causes.) The first cause is above being only as infinite being itself, not as beyond being: it is above participated being because it is subsistent existence. "He who is" is the most proper name of God, and divine simplicity requires the identity of essence and existence, not their absence.

deductive · Enneads VI.9.1–3 · Enneads V.4.1 · Enneads V.3.11–13

Draft — not yet reviewed

The soul is not a bodyThe soul is an incorporeal substance, not a body nor a property or arrangement of a body, and what is incorporeal and simple does not perish.

1Suppose the soul is a body, as the Stoics and Epicureans hold.
2Every body is composite and in flux, so it needs something else to hold it together and give it life; the soul would then need a further soul, without end.
3A body cannot be wholly present in many parts at once, yet a perception at the fingertip is felt by the whole soul as one.
4Thinking grasps things without size and parts, which no body could receive.
∴The soul is an incorporeal substance, not a body nor a property or arrangement of a body, and what is incorporeal and simple does not perish.

Epicurus objects. (Earlier view that IV.7.2–8 argues against.) The soul is a fine-textured body spread through the whole frame; it perceives only while contained in the body and disperses when the body is destroyed.

David Hume objects. (Applied; Hume does not discuss Plotinus.) Experience shows constant conjunctions between bodily states and thought, and for all we can know a priori matter and motion may be the causes of thought; the simplicity of the soul is an unintelligible hypothesis.

reductio · Enneads IV.7.2–8 · Enneads IV.7.9–12

Draft — not yet reviewed

Key terms

All key terms →

τὸ ἕνto hen: the One · the GoodThe first principle, wholly simple and beyond being and thought, from which everything else derives without the One being lessened. It can be named only by what it is not, or as the Good.3 links to other thinkers →
νοῦςnous: Intellect · MindThe second level of reality, which comes from the One and turns back to contemplate it. In Intellect thinking and what is thought are one: the Forms are its contents, not objects outside it.3 links to other thinkers →
ψυχήpsychē: SoulThe third level, proceeding from Intellect, which gives life and order to the cosmos and to every body and is present whole throughout what it animates. Individual souls are never wholly cut off from the intelligible.1 link to other thinkers →
πρόοδος / ἐπιστροφήproodos / epistrophē: procession · returnEach level of reality flows from the one above without diminishing it, and becomes itself by turning back to contemplate its source.1 link to other thinkers →
ἕνωσιςhenōsis: unionThe soul's union with the One, reached by setting aside everything, thought included. Porphyry reports that Plotinus reached it four times while he was with him.
ὁμοίωσις θεῷhomoiōsis theōi: likeness to godThe goal of virtue. The civic virtues give measure to the passions; the higher, purifying virtues separate the soul from the body and make it like Intellect.1 link to other thinkers →

Relations

Open in the network →

Shaped by

PlatoInfluence

Shaped

Augustine of HippoInfluenced

Works

EnneadsOnline · 4c. 253–270

How to cite

Hekmat. "Plotinus." Draft, awaiting review; last updated 20 October 2026. https://hekmat.local/thinkers/plotinus/