A man in a ragged loincloth braced against a huge round boulder, one hand flat on the stone, driving it up a steep slope of dark, broken rock beneath a storm-dark sky

ΦΙΛΟΣΟΦΙΑ

Philosophy

The love of wisdom as the ancient schools practised it: an argued account of the world joined to a discipline of living.

Homer's Sisyphus heaves a huge stone uphill with hands and feet, and it rolls back to the plain. Lucretius made him a man we have all seen: the one who seeks the rods and axes of office from the people and always comes away beaten — the punishments of Acheron, he says, are all here in this life. For the Epicureans, philosophy was the cure for that stone.

Orientation

Reading Philosophy

Three monks at a table in a stone scriptorium: a young monk ruling a page by candlelight, a second grinding pigment in a mortar, and an old monk laying gold leaf on a painted miniature in an open book

The Copyists

Between Justinian's edict and Ficino's printed Plato (1484) the schools lived as copies. Boethius meant to put all of Plato and Aristotle into Latin and finished some of the logic; for six centuries the Latin West knew of Plato little more than part of the Timaeus in Calcidius' version.

From the Milesians and Pythagoras to Plato, Aristotle, the Hellenistic schools and the Neoplatonic curriculum, read as the schools read themselves: as ways of life sustained by daily exercise.

  1. This dossier treats philosophy as the ancient schools understood it — not a body of doctrine to be mastered but a way of life to be practised, a daily formation of attention, desire, and judgement that Pierre Hadot recovered for modern readers under the name of spiritual exercises.

  2. The schools stand adjacent to the mystery traditions without dissolving into them: Pythagorean silence, Platonic ascent, and the Neoplatonic curriculum share gestures with initiation, yet the philosophers insisted that their instrument was argument, and the archive keeps that insistence in view.

  3. Dating is comparatively firm here — trials, foundations, and closures are matters of record — but the texts are not: no Presocratic work survives whole, Socrates wrote nothing, and much that circulates under Pythagoras' name is pseudepigraphic.

In brief

Core Motif

The central gesture of ancient philosophy, on Hadot's reading, is the conversion of attention: doctrine exists in the service of a transformed life, and the schools were less lecture halls than communities of formation in which the soul was worked on daily. The archive treats this as philosophy's own discipline — contiguous with the mystery traditions in its gestures, distinct from them in its instrument, which remains argument.

5 points
  • Philosophy as an art of living rather than a system of propositions
  • Spiritual exercises — meditation on death, examination of conscience, premeditation of evils
  • The school as a community of formation, with common meals, silence, and rule
  • Doctrine memorised so as to be available at the moment of trial
  • Conversion as the turning of the whole soul, not a change of opinion

School as Way

Each school pairs a physics or metaphysics with a regimen, and the pairing is the point: what a school holds about the cosmos and what it asks of its members before breakfast are one teaching seen from two sides. Comparing doctrine against exercise across the five traditions shows rivals in theory converging in therapy — and shows where the Neoplatonists began to negotiate the border with rite.

5 points
  • Pythagorean — a cosmology of number paired with silence, self-examination, and dietary rule
  • Platonic — the theory of Forms paired with dialectic as purification and the practice of dying
  • Aristotelian — a metaphysics of substance paired with habituation and the contemplative life
  • Stoic and Epicurean — rival physics, convergent therapy: tranquillity through retrained assent and desire
  • Neoplatonic — a graded curriculum in which the order of reading is itself the ladder of ascent

Aetherica Use

Where the archive meets the schools: the Pythagorean discipline of memory and silence, Socrates' daimon, Plato's cave and the philosopher-king, and Plotinus as Porphyry arranged him.

6 points
  • The Pythagorean evening reviewMagi and the Pre-Socratics 32:11
  • Socrates' daimonThe Seven Sages 28:32
  • Plato's cave as a state of beingThe Temple Has No Guard 53:03
  • Mathematics as the mark of the eternalMagi and the Pre-Socratics 45:52
  • Porphyry's EnneadsNeoplatonism 12:07
  • Listening path: The Path of the Theurgist

Republic VI–VII

The line, the cave and the turning

Asked what the Good is, Socrates will not define it. He offers three images instead: the sun, a divided line, and a cave. The line is the most exact of them — one line cut into two unequal parts, each part cut again in the same ratio, and four states of the soul set against four kinds of object, each state having as much clarity as its objects have truth.

The cave sets the line in motion: a prisoner turned round and dragged up into the light. Plato's word for the turn, periagōgē, is the hinge of his account of education. Education does not put sight into blind eyes; it turns the whole soul. The curriculum that follows climbs the line step by step; it sends its best back down into the cave at thirty-five, and only at fifty to the Good itself.

Sources Plato, Republic, VI 506d–e (the Good not defined); 507b–509c (sun); 509d–511e (line)Plato, Republic, VII 514a–517c (cave); 518b–d and 521c (periagōgē); 521c–541b (curriculum)

The instruction · 509d

“Take a line cut in two unequal parts, and cut each part again in the same ratio — the part of the visible kind and the part of the intelligible.”

ὥσπερ τοίνυν γραμμὴν δίχα τετμημένην λαβὼν ἄνισα τμήματα, πάλιν τέμνε ἑκάτερον τὸ τμῆμα ἀνὰ τὸν αὐτὸν λόγον, τό τε τοῦ ὁρωμένου γένους καὶ τὸ τοῦ νοουμένου

Plato, Republic, VI 509d — Stephanus pages; Greek of Burnet's Oxford text.

The principle · 511e

“Arrange them in proportion, holding that each has as much clarity as its objects have truth.”

καὶ τάξον αὐτὰ ἀνὰ λόγον, ὥσπερ ἐφ’ οἷς ἐστιν ἀληθείας μετέχει, οὕτω ταῦτα σαφηνείας ἡγησάμενος μετέχειν

Plato, Republic, VI 511e

509b · 508b–c

The source of the light

“The objects of knowledge receive from the Good not only their being known but their being and reality too — though the Good is not being, but still beyond being, exceeding it in dignity and power.”

οὐκ οὐσίας ὄντος τοῦ ἀγαθοῦ, ἀλλ’ ἔτι ἐπέκεινα τῆς οὐσίας πρεσβείᾳ καὶ δυνάμει ὑπερέχοντος

Plato, Republic, VI 509b — Glaucon answers, 'Apollo, what a divine hyperbole!' (509c).

The sun is the offspring of the Good, which the Good begot as its analogue: what the Good is in the intelligible region to understanding and its objects, the sun is in the visible region to sight and what is seen. It gives visible things not only their being seen but their coming to be and growth, without being becoming itself.

Plato, Republic, VI 508b–c; 509b

In the figure

The Good is not a fifth segment. It stands above the line as its source, as the sun stands over the visible.

One line, four cuts, six studies

The line as Plato instructs it, and beside it, as a separate figure, the ladder of studies the Republic builds from it. The ratio of the cuts is unstated: the 3 : 2 here is the drawing’s convention, not Plato’s.

A vertical line divided into four unequal segments. From the bottom: imaging, set over shadows and reflections; trust, over animals, plants and made things; thought, over the square itself and the diagonal itself; understanding, over the Forms. The two middle segments are equal in length. Above the line, separate from it, a small open circle marks the Good, beyond being. Beside it a ladder of six studies — number, plane geometry, solid geometry, astronomy, harmonics, dialectic as coping-stone — with the ages twenty, thirty and fifty, and a line that goes down into the cave at thirty-five and rises to the Good only at fifty. The line, cut at the drawing’s 3 : 2; the Good above it, unjoined.
The six studies, and the road: down into the cave at thirty-five, up to the Good at fifty.

Four states, four kinds of object

From the top of the line down, as Book VI names them (511d–e).

  • intelligible · the uppermost

    νόησις (noēsis)

    understanding, intellection

    Set over
    The Forms themselves, reached without images: the argument proceeds 'by Forms themselves, through themselves, to themselves, and ends in Forms'.
    εἴδεσιν αὐτοῖς δι’ αὐτῶν εἰς αὐτά, καὶ τελευτᾷ εἰς εἴδη

    Plato, Republic, VI 511c

    How it moves · the Book VII name
    How it moves
    Reason grasps it by the power of dialectic, treating hypotheses not as first principles but as hypotheses in the true sense — stepping-stones and springboards — so as to reach the unhypothetical first principle of everything, and then descend.
    τὰς ὑποθέσεις ποιούμενος οὐκ ἀρχὰς ἀλλὰ τῷ ὄντι ὑποθέσεις, οἷον ἐπιβάσεις τε καὶ ὁρμάς, ἵνα μέχρι τοῦ ἀνυποθέτου ἐπὶ τὴν τοῦ παντὸς ἀρχὴν ἰών

    Plato, Republic, VI 511b

    Renamed in Book VII · ἐπιστήμη (epistēmē)
    In the restatement of Book VII the uppermost segment is called epistēmē, and noēsis becomes the name of the whole upper section, as doxa is of the whole lower one. A reader who meets 'noēsis' must check which book he is in.

    Plato, Republic, VII 533e–534a

  • intelligible · third

    διάνοια (dianoia)

    thought, reasoning: 'something between opinion and understanding' (511d)

    Set over
    The objects of geometry and its sister arts. The geometers use drawn figures, but they reason 'for the sake of the square itself and the diagonal itself, not the one they draw'.
    τοῦ τετραγώνου αὐτοῦ ἕνεκα τοὺς λόγους ποιούμενοι καὶ διαμέτρου αὐτῆς, ἀλλ’ οὐ ταύτης ἣν γράφουσιν

    Plato, Republic, VI 510d–e; 511b

    How it moves · the archive
    How it moves
    The soul uses as images the things that were originals below, and is forced to inquire from hypotheses, travelling not to a first principle but down to a conclusion.
    ζητεῖν ἀναγκάζεται ἐξ ὑποθέσεων, οὐκ ἐπ’ ἀρχὴν πορευομένη ἀλλ’ ἐπὶ τελευτήν

    Plato, Republic, VI 510b

    Heard in the archive

  • visible · second

    πίστις (pistis)

    trust, conviction: confidence in the things the images are of

    Set over
    What the images are likenesses of: the animals around us, everything that grows, and the whole class of made things.
    τά τε περὶ ἡμᾶς ζῷα καὶ πᾶν τὸ φυτευτὸν καὶ τὸ σκευαστὸν ὅλον γένος

    Plato, Republic, VI 510a

  • visible · the last

    εἰκασία (eikasia)

    imaging: taking likenesses for what they are likenesses of

    Set over
    Images: first shadows, then the appearances in water and in surfaces that are dense, smooth and bright, and everything of that sort.
    τὰς σκιάς, ἔπειτα τὰ ἐν τοῖς ὕδασι φαντάσματα καὶ ἐν τοῖς ὅσα πυκνά τε καὶ λεῖα καὶ φανὰ συνέστηκεν

    Plato, Republic, VI 509e–510a

The restatement · VII 533e–534a

“It will be enough to call the first part knowledge, the second thought, the third trust and the fourth imaging; the last two together opinion, the first two together understanding — opinion being about becoming, understanding about being.”

τὴν μὲν πρώτην μοῖραν ἐπιστήμην καλεῖν, δευτέραν δὲ διάνοιαν, τρίτην δὲ πίστιν καὶ εἰκασίαν τετάρτην· καὶ συναμφότερα μὲν ταῦτα δόξαν, συναμφότερα δ’ ἐκεῖνα νόησιν· καὶ δόξαν μὲν περὶ γένεσιν, νόησιν δὲ περὶ οὐσίαν

Plato, Republic, VII 533e–534a — Socrates then declines to divide the objects in the same way, 'so as not to fill us with many times more arguments' (534a).

What the text leaves open

Three traps: the renaming, the unstated ratio, the equal middle segments.

  • Which part is longer?

    Plato says the cuts are unequal and in the same ratio; he does not say which main part is the longer, nor what the ratio is. The question is ancient. Plutarch's third Platonic Question asks it outright — 'which of the parts, the intelligible or the sensible, is greater? For he himself has not made it plain' — and argues it both ways.

    πότερον τῶν τμημάτων, τὸ νοητὸν ἢ τὸ αἰσθητόν, μεῖζόν ἐστιν; αὐτὸς γὰρ οὐ δεδήλωκε.

    Plato, Republic, VI 509d

    Plutarch, Platonic Questions, 3 (1001c–1002e)

  • The two middle parts are equal

    Cut a line in any ratio, cut each part again in that ratio, and the second and third segments come out equal: thought and trust have the same length. It follows from the construction itself. Plato does not remark on it, and readers have disagreed whether it was meant to signify anything; the figure shows it and draws no lesson from it.

    Plato, Republic, VI 509d — If the whole is 1 and the ratio r : 1, both middle segments measure r / (1 + r)².

  • Up and down

    The line need not stand upright, but Plato's words point that way: understanding is set over 'the uppermost' part and imaging over 'the last'. The figure draws it vertically, the clearest at the top.

    νόησιν μὲν ἐπὶ τῷ ἀνωτάτω … τῷ τελευταίῳ εἰκασίαν

    Plato, Republic, VI 511d–e

The cave

“Compare our nature, in respect of education and its lack, to an experience like this.”

ἀπείκασον τοιούτῳ πάθει τὴν ἡμετέραν φύσιν παιδείας τε πέρι καὶ ἀπαιδευσίας

Plato, Republic, VII 514a — Stephanus pages; Greek of Burnet's Oxford text.

  1. Prisoners bound from childhood, legs and necks, in an underground dwelling whose long entrance is open to the light, can see only the wall before them. Behind and above burns a fire; between fire and prisoners runs a road with a low wall built along it, like a puppeteers' screen, and people carry artefacts above it. The prisoners take the shadows for the truth.

    Plato, Republic, VII 514a–515c

  2. One is released and compelled suddenly to stand up, turn his neck round, walk and look toward the light. It pains him; dazzled, he holds the shadows he used to see truer than the things now shown him.

    ἀναγκάζοιτο ἐξαίφνης ἀνίστασθαί τε καὶ περιάγειν τὸν αὐχένα καὶ βαδίζειν καὶ πρὸς τὸ φῶς ἀναβλέπειν

    Plato, Republic, VII 515c–d

  3. He is dragged up the rough, steep ascent and out into the sunlight, and at first can see nothing.

    Plato, Republic, VII 515e–516a

  4. Habituation, in order: first shadows, then the reflections of men and things in water, then the things themselves; then the heavens by night, the light of stars and moon; last of all the sun itself, in its own place.

    καὶ πρῶτον μὲν τὰς σκιὰς ἂν ῥᾷστα καθορῷ, καὶ μετὰ τοῦτο ἐν τοῖς ὕδασι τά τε τῶν ἀνθρώπων καὶ τὰ τῶν ἄλλων εἴδωλα, ὕστερον δὲ αὐτά

    Plato, Republic, VII 516a–b

  5. He reasons that the sun provides the seasons and the years, governs everything in the visible region, and is in a way the cause of all that they used to see.

    Plato, Republic, VII 516b–c

  6. Going back down, his eyes are full of darkness; he is laughed at, and the prisoners would kill whoever tried to free them and lead them up, if they could lay hands on him.

    Plato, Republic, VII 516e–517a

Plato’s only mapping · 517b

“The region revealed through sight is the prison dwelling, the light of the fire in it the power of the sun; and if you take the upward journey and the sight of things above as the soul's ascent to the intelligible region, you will not mistake my hope.”

τὴν μὲν δι’ ὄψεως φαινομένην ἕδραν τῇ τοῦ δεσμωτηρίου οἰκήσει ἀφομοιοῦντα, τὸ δὲ τοῦ πυρὸς ἐν αὐτῇ φῶς τῇ τοῦ ἡλίου δυνάμει· τὴν δὲ ἄνω ἀνάβασιν καὶ θέαν τῶν ἄνω τὴν εἰς τὸν νοητὸν τόπον τῆς ψυχῆς ἄνοδον τιθεὶς οὐχ ἁμαρτήσῃ

Plato, Republic, VII 517b — This two-part correspondence is the only mapping Plato gives; he does not align the cave's stages with the line's four segments one by one.

“God knows whether it happens to be true.”

θεὸς δέ που οἶδεν εἰ ἀληθὴς οὖσα τυγχάνει

Plato, Republic, VII 517b — Socrates' own reservation about the image, said in the same breath as the application.

Heard in the archive1 chapter

The turning

περιαγωγή (periagōgē)

a turning round; Plato's word for what education does

  • “As an eye could not turn from darkness to light except with the whole body, so the instrument by which each learns must be turned round, with the whole soul, away from what comes to be, until it can bear to look at what is and at the brightest of what is — and that, we say, is the Good.”

    οὕτω σὺν ὅλῃ τῇ ψυχῇ ἐκ τοῦ γιγνομένου περιακτέον εἶναι, ἕως ἂν εἰς τὸ ὂν καὶ τοῦ ὄντος τὸ φανότατον δυνατὴ γένηται ἀνασχέσθαι θεωμένη

    Plato, Republic, VII 518c–d

  • “Not the flip of a shell, but the turning of a soul from a day that is a kind of night to the true day — the ascent to what is, which we shall call true philosophy.”

    οὐκ ὀστράκου ἂν εἴη περιστροφή, ἀλλὰ ψυχῆς περιαγωγὴ ἐκ νυκτερινῆς τινος ἡμέρας εἰς ἀληθινήν, τοῦ ὄντος οὖσαν ἐπάνοδον, ἣν δὴ φιλοσοφίαν ἀληθῆ φήσομεν εἶναι

    Plato, Republic, VII 521c — The 'shell' is a children's game: a potsherd, dark on one side and light on the other, was spun to decide which team ran ('night or day'). The standard explanation, after the scholia (Adam ad loc.).

Two more passagesVII 518b–c · VII 518d
  • “Education is not what some professions declare it to be. They say they put knowledge into a soul that lacks it, as if putting sight into blind eyes.”

    οὐκ ἐνούσης ἐν τῇ ψυχῇ ἐπιστήμης σφεῖς ἐντιθέναι, οἷον τυφλοῖς ὀφθαλμοῖς ὄψιν ἐντιθέντες

    Plato, Republic, VII 518b–c — Stephanus pages; Greek of Burnet's Oxford text.

  • “The art of turning round: not of putting sight into the soul, but, since it has sight and is not turned the right way, of contriving that it should be.”

    οὐ τοῦ ἐμποιῆσαι αὐτῷ τὸ ὁρᾶν, ἀλλ’ ὡς ἔχοντι μὲν αὐτό, οὐκ ὀρθῶς δὲ τετραμμένῳ

    Plato, Republic, VII 518d

VII 521c–534e

The six studies

“What study would draw the soul from what comes to be to what is?”

μάθημα ψυχῆς ὁλκὸν ἀπὸ τοῦ γιγνομένου ἐπὶ τὸ ὄν

Plato, Republic, VII 521d — Stephanus pages; Greek of Burnet's Oxford text.

  1. 6

    Dialecticἡ διαλεκτικὴ μέθοδος

    The only method that does away with hypotheses and goes to the first principle itself, gently drawing up the eye of the soul 'sunk in a barbaric bog', with the other studies as its fellow-workers in the turning.

    Plato, Republic, VII 533c–d

  2. 5

    Harmonics

    As the eyes are fixed on astronomy, the ears are fixed on harmonic motion, 'and these are sister sciences, as the Pythagoreans say'. The Pythagoreans are faulted for seeking numbers in heard concords rather than asking which numbers are concordant and why.

    καὶ αὗται ἀλλήλων ἀδελφαί τινες αἱ ἐπιστῆμαι εἶναι, ὡς οἵ τε Πυθαγόρειοί φασι

    Plato, Republic, VII 530d–531c

  3. 4

    Astronomyἀστρονομία (astronomia)

    'The motion of depth' — solids in revolution — to be studied through problems, as geometry is, not by gazing at the ornaments of the sky.

    Plato, Republic, VII 528e–530c

  4. 3

    Solid geometryτὴν βάθους αὔξης μέθοδον

    'The study of the increase of depth.' Socrates first skips it, putting astronomy straight after geometry, then goes back: solids must come before solids in motion. He admits the study is undeveloped.

    Plato, Republic, VII 528a–e

  5. 2

    Plane geometryγεωμετρία (geōmetria)

    Useful for war, but studied for the knowledge of what always is.

    Plato, Republic, VII 526c–527c

  6. 1

    Number and calculationἀριθμόν τε καὶ λογισμόν

    'The lowly business of telling one, two and three apart' — needed by every art, but to be pursued not for buying and selling, until the soul comes to contemplate the nature of numbers by understanding itself.

    Plato, Republic, VII 522c–526c

The arts, and the coping-stone533d, on what the studies were called; 534e, dialectic set on top.
“These arts we have often called sciences from habit, but they need another name, clearer than opinion and dimmer than knowledge — earlier we defined it as thought.”

ἃς ἐπιστήμας μὲν πολλάκις προσείπομεν διὰ τὸ ἔθος, δέονται δὲ ὀνόματος ἄλλου, ἐναργεστέρου μὲν ἢ δόξης, ἀμυδροτέρου δὲ ἢ ἐπιστήμης—διάνοιαν δὲ αὐτὴν ἔν γε τῷ πρόσθεν που ὡρισάμεθα

Plato, Republic, VII 533d — This is what ties the mathematical studies to the line's third segment.

“Dialectic lies on top of the studies like a coping-stone, and no other study can rightly be set above it.”

ὥσπερ θριγκὸς τοῖς μαθήμασιν ἡ διαλεκτικὴ ἡμῖν ἐπάνω κεῖσθαι

Plato, Republic, VII 534e

Heard in the archive1 chapter

VII 536d–540b

Thirty years, and a return

  1. childhood

    Calculation, geometry and all the preliminary studies are set before the children — in play, not under compulsion.

    Plato, Republic, VII 536d–537a

  2. two or three years

    Compulsory physical training, during which nothing else can be done: 'toil and sleep are enemies of study'.

    Plato, Republic, VII 537b

  3. twenty

    Those selected draw together the studies they met piecemeal into a synoptic view of their kinship with one another and with the nature of what is — 'the synoptic is the dialectical'.

    ὁ μὲν γὰρ συνοπτικὸς διαλεκτικός

    Plato, Republic, VII 537b–c

  4. thirty

    The best of these are tested by dialectic: which of them can let go of eyes and the other senses and go, with truth, to what is itself.

    Plato, Republic, VII 537d

  5. thirty-five

    After five years of dialectic they must be sent down into the cave again, and made to hold commands and offices for fifteen years, so as not to fall behind the others in experience.

    μετὰ γὰρ τοῦτο καταβιβαστέοι ἔσονταί σοι εἰς τὸ σπήλαιον πάλιν ἐκεῖνο

    Plato, Republic, VII 539e–540a

  6. fifty

    Those who come through are made to lift the radiance of the soul toward what gives light to all things, and having seen the Good itself, to use it as a pattern for ordering the city, private persons and themselves, each in turn, the rest of their lives.

    ἰδόντας τὸ ἀγαθὸν αὐτό, παραδείγματι χρωμένους ἐκείνῳ

    Plato, Republic, VII 540a–b

“A free person ought to learn nothing under slavery … nothing learned by force stays in the soul.”

οὐδὲν μάθημα μετὰ δουλείας τὸν ἐλεύθερον χρὴ μανθάνειν

Plato, Republic, VII 536e

Heard in the archive2 chapters

Dossier

The Philosophy dossier

A dossier on the ancient schools as ways of life — from Thales to the Neoplatonic curriculum, and Hadot's recovery of their spiritual exercises.

Traditions

  1. Pythagorean and Presocratic6th–5th centuries BCE

    The conventional opening: Thales at Miletus subjecting the cosmos to argument, and Pythagoras at Croton founding a community in which a cosmology of number was inseparable from a rule of life — silence, examination, dietary observance. Nothing from Pythagoras' own hand survives, and the school's history is reconstructed from later, often idealising sources; the Presocratics as a whole reach us only in fragments quoted by others.

    Curriculum of the School

    1. 01Number as the architecture of the cosmos
    2. 02The transmigration and purification of the soul
    3. 03Harmony of the spheres
    4. 04Kinship of all ensouled beings

    Representative texts

    • The Presocratic fragments (Diels-Kranz)
    • Iamblichus, On the Pythagorean Way of Life
    • The Golden Verses (pseudepigraphic)
  2. Platonic (Academy)c. 387 BCE onward

    Founded in the grove of Academus around 387 BCE, the Academy made philosophy an institution: common meals, mathematics as propaedeutic, dialectic as purification. The dialogues stage the discipline as erotic ascent and preparation for death, and the school proved supple enough to turn wholly sceptical under Arcesilaus without ceasing to be a way of life — the same formation, a different exercise.

    Curriculum of the School

    1. 01The Forms as intelligible reality
    2. 02The tripartite soul
    3. 03Recollection (anamnesis)
    4. 04The Good beyond being
    5. 05Assimilation to god as the end

    Representative texts

    • Plato, Phaedo
    • Plato, Republic
    • Plato, Symposium
  3. Aristotelian (Lyceum)335 BCE onward

    Aristotle returns to Athens in 335 BCE and teaches in the Lyceum's covered walks; the school takes its other name, Peripatetic, from them. What survives are lecture courses rather than published books — a systematic ordering of nature and soul in which virtue is acquired by habituation, and the contemplative life is argued, carefully and with reservations, to be the happiest available to a human being.

    Curriculum of the School

    1. 01Substance, form, and matter
    2. 02The four causes
    3. 03Potentiality and actuality
    4. 04The unmoved mover
    5. 05The soul as form of the body

    Representative texts

    • Aristotle, Nicomachean Ethics
    • Aristotle, Metaphysics
    • Aristotle, De Anima
  4. Hellenistic therapies (Stoa and Garden)c. 306 BCE onward

    Epicurus buys the Garden around 306 BCE; Zeno begins teaching in the painted colonnade around 300. The two schools are doctrinal rivals — atoms and void against a providential continuum of fire — yet their regimens converge: philosophy as medicine for the passions, administered through memorised maxims, examination of the day, and the premeditation of evils, with tranquillity as the promised cure.

    Curriculum of the School

    1. 01Logos as the rational order of the cosmos (Stoa)
    2. 02Atoms and void (Garden)
    3. 03Fate, providence, and assent
    4. 04Pleasure as the absence of disturbance
    5. 05The dichotomy of what is and is not up to us

    Representative texts

    • Epicurus, Letter to Menoeceus
    • Epictetus, Encheiridion
    • Marcus Aurelius, Meditations
    • Seneca, Letters to Lucilius
  5. Neoplatonic curriculum3rd–6th centuries CE

    From Plotinus' seminars at Rome to the graded curricula of Iamblichus and Proclus, late Platonism organised the whole inheritance into a ladder: Aristotle read as the lesser mysteries preparing for Plato's greater, and the order of reading itself an instrument of ascent. It is here that philosophy and theurgy negotiate their border — Plotinus reticent about rite, Iamblichus insisting upon it — and the archive keeps the two dossiers adjacent for that reason.

    Curriculum of the School

    1. 01The One beyond intellect and being
    2. 02Procession and return
    3. 03The hypostases: One, Intellect, Soul
    4. 04Contemplation as generative
    5. 05The undescended soul (contested within the school)

    Representative texts

    • Plotinus, Enneads
    • Porphyry, Life of Plotinus
    • Proclus, Elements of Theology
  6. Cynic4th century BCE–5th century CE

    Antisthenes, Diogenes of Sinope and Crates made philosophy a public way of life stripped to essentials: living by nature against custom, in the open street. Asked where he came from, Diogenes answered 'a citizen of the cosmos'. Hadot treats the Cynics as the limiting case of philosophy as a way of life — almost all exercise, almost no doctrine.

    Curriculum of the School

    1. 01Life according to nature, against convention
    2. 02Self-sufficiency (autarkeia)
    3. 03Training of body and soul (askesis)
    4. 04Frankness of speech (parrhesia)
    5. 05Citizenship of the cosmos

    Representative texts

    • Diogenes Laertius, Lives VI
    • The Cynic Epistles (pseudepigraphic)
    • Lucian, Demonax

Chronology

How to read the chart

Each period is drawn to its extent on one shared axis, so a three-hundred-year epoch runs three times the length of a hundred-year one. The boundaries are conventional rather than exact: a bar marks where the surviving evidence sits, not the year a tradition began or stopped. The empty stretches are part of the record — but a gap here means this dossier holds nothing in that interval, not that nothing happened in it.

  1. 585 BCE

    Thales and the eclipse

    By convention the history opens at Miletus, where Thales is said to have predicted the solar eclipse of 585 BCE — a report first found in Herodotus, a century and a half later, and more emblem than record. What matters is the gesture it commemorates: the cosmos treated as something argument can reach.

    Fixed points · Note
  2. Gap · 585 BCE – 530 BCE · 55 yearsAbout this gap

    Between Thales and Pythagoras the Milesians go on: Anaximander, said to be the first Greek to set out an account of nature in a written book, and Anaximenes, who made air the first principle; Xenophanes leaves Ionia for the West, mocking gods made in human shape.

    c. 530 BCE

    Pythagoras at Croton

    Pythagoras leaves Samos and establishes at Croton, around 530 BCE, a community in which cosmology and rule of life are one discipline — silence, examination of conscience, dietary observance. Nothing from his own hand survives; the way of life is reconstructed from later and often idealising witnesses.

  3. Gap · 530 BCE – 399 BCE · 131 yearsAbout this gap

    Between Croton and the trial: Heraclitus at Ephesus and Parmenides at Elea, Empedocles in Sicily, Anaxagoras brought to Athens and prosecuted there for impiety, and the sophists teaching virtue for a fee — the arguments Socrates inherited and turned against them.

    399 BCE

    The trial of Socrates

    Socrates is tried and executed at Athens in 399 BCE on charges of impiety and corrupting the young. The Phaedo makes his last day the tradition's founding exercise — philosophy as the practice of dying — and every subsequent school claims his example.

    Note

  4. c. 387 BCE

    Foundation of the Academy

    Plato begins teaching in the grove of Academus outside the walls of Athens — around 387 BCE by convention. The Academy is the first durable philosophical institution, a community of common meals, mathematics, and dialectic that persists, through refoundations and a long sceptical turn, for centuries.

  5. Gap · 387 BCE – 335 BCE · 52 yearsAbout this gap

    Between the Academy's founding and the Lyceum: Aristotle's twenty years in the Academy (367-347), Plato's death and Speusippus' succession, and Diogenes of Sinope making the Cynic life a public argument in the agora.

    335 BCE

    Aristotle in the Lyceum

    Returning to Athens in 335 BCE, Aristotle teaches in the walkways of the Lyceum. The corpus that survives consists of school treatises rather than finished books — lecture courses in which happiness is argued to be activity of soul in accordance with virtue, and the contemplative life its completion.

  6. Gap · 335 BCE – 306 BCE · 29 yearsAbout this gap

    Between the Lyceum and the Garden: Aristotle leaves Athens after Alexander's death (323) and dies the next year; Theophrastus keeps the school; Pyrrho returns from India with Alexander's army and teaches the suspension of judgement.

    c. 306 BCE – 300 BCE

    Garden and Stoa

    Epicurus purchases the Garden around 306 BCE; Zeno of Citium begins teaching in the Stoa Poikile around 300. Two rival physics — atoms and void against providential fire — are put to convergent use: philosophy as a therapy of desire and fear, promising tranquillity in an age of empires.

    Fixed points
  7. Gap · 300 BCE – 170 CE · 470 yearsAbout this gap

    Between the Hellenistic foundations and Marcus: Cicero carries the schools into Latin (45-44 BCE), Andronicus edits Aristotle's treatises, Seneca writes his Letters to Lucilius and Epictetus teaches at Nicopolis — Middle Platonists, Roman Stoics and the first commentators keep every tradition in daily exercise.

    c. 170 CE – 180 CE

    Marcus Aurelius writes to himself

    On campaign on the Danube the emperor keeps notebooks the manuscripts title 'To Himself' — Stoic doctrine rehearsed as a daily exercise, not taught. Book I ends 'among the Quadi, on the Gran', Book II 'at Carnuntum'. Pierre Hadot read them as the fullest surviving record of an ancient spiritual exercise.

    Fixed points

  8. 204 CE – 270 CE

    Plotinus

    Plotinus, born in 204, teaches at Rome from 244 and dies in Campania in 270; Porphyry later edits the seminars into the Enneads. Platonism becomes an itinerary of return to the One — contemplative, closely argued, and deliberately reticent about rite.

    Fixed points
  9. Gap · 270 CE – 415 CE · 145 yearsAbout this gap

    Between Plotinus and Hypatia: Porphyry edits the Enneads and writes the Life of Plotinus (c. 300-305); Iamblichus orders Plato's dialogues into a curriculum and answers Porphyry's doubts with theurgy; and the emperor Julian's law on teachers, with the letter that explains it (362), bars Christians from teaching the classics.

    415 CE

    The murder of Hypatia

    Hypatia, mathematician and Platonist teacher at Alexandria, is killed by a mob in 415. The event is a matter of record and was condemned by contemporaries; it marks not the end of pagan philosophy — the Alexandrian school continued — but the new precariousness of its position.

  10. Gap · 415 CE – 524 CE · 109 yearsAbout this gap

    Between Hypatia and Boethius: Proclus heads the school at Athens for half a century (d. 485) and writes the Elements of Theology; at Alexandria Hermias and Ammonius teach Plato and Aristotle side by side; and the Dionysian writer christens Proclus' hierarchy.

    c. 524 CE

    Boethius writes the Consolation

    Imprisoned — at Pavia, by tradition — awaiting execution under Theoderic, Boethius composes the Consolation of Philosophy around 524 — Lady Philosophy administering the old therapies of the schools to a condemned man. The book carries the ancient exercises whole into the Latin Middle Ages.

  11. 529 CE

    Justinian closes the Athenian school

    In 529 Justinian's legislation ends pagan teaching at Athens; Damascius and six colleagues depart for the Persian court, returning under a negotiated safe conduct. It is the conventional terminus of ancient philosophy — though Alexandria's school taught on into the seventh century.

    Note
  12. Gap · 529 CE – 1484 · 955 yearsAbout this gap

    The nine centuries between Justinian and Ficino are transmission, not void: Byzantine copyists, the Arabic falsafa, and Latin scholasticism kept the texts and the arguments in continuous circulation.

    1484

    Ficino's Plato complete

    Marsilio Ficino's complete Latin Plato is printed at Florence in 1484 — the first time the whole corpus stands open to the Latin West. Read alongside his Plotinus of 1492 and the Hermetica, it restores the ancient curriculum as a living option for Renaissance Europe.

  13. Gap · 1484 – 1981 · 497 yearsAbout this gap

    The interval since the Renaissance is quiet continuation rather than absence: Montaigne's essay 'That to philosophise is to learn to die' (Essais I.20, 1580) takes its title from Cicero and its matter from the Phaedo; the exercises persist in monastic rule and in the moralists, even as academic philosophy professionalises.

    1981 – present

    Hadot's recovery

    Pierre Hadot publishes Exercices spirituels et philosophie antique in 1981, arguing that the ancient schools taught ways of life sustained by spiritual exercises, and that their texts must be read as instruments of formation rather than treatises. The reframing continues to shape scholarship and practice alike.

Figures

  1. Pythagoras

    c. 570–c. 495 BCE

    Founder of the community at Croton where cosmology and rule of life were one discipline; known entirely through later and often idealising sources.

  2. Socrates

    c. 469–399 BCE

    Wrote nothing; his trial and death at Athens in 399 BCE gave every subsequent school its founding image of philosophy lived to the end.

  3. Plato

    c. 428–348 BCE

    Founder of the Academy, whose dialogues stage philosophy as erotic ascent and preparation for death, and set the curriculum for a millennium.

  4. Aristotle

    384–322 BCE

    Plato's pupil and the Lyceum's founder, whose surviving lecture courses made habituation and contemplation the twin engines of the good life.

  5. Zeno of Citium

    c. 334–262 BCE

    Founder of the Stoa, whose teaching in the painted colonnade from about 300 BCE turned philosophy into a daily therapy of assent and desire.

12 more figures (of 17)

  1. Plotinus

    204–270

    Teacher at Rome whose seminars, edited by Porphyry as the Enneads, made Platonism an itinerary of return to the One.

  2. Hypatia

    c. 355–415

    Mathematician and Platonist teacher at Alexandria; her murder in 415, condemned by contemporaries, marks the new precariousness of the late schools.

  3. Pierre Hadot

    1922–2010

    Historian of ancient philosophy whose 1981 essays recovered the schools as ways of life sustained by spiritual exercises, and gave this archive its reading of the subject.

  4. Epicurus

    341–270 BCE

    Founder of the Garden at Athens, whose Letter to Menoeceus sets out a regimen against the fear of death and the disorder of desire, written to be memorised.

  5. Diogenes of Sinope

    c. 412/404–323 BCE

    The Cynic who made his life the argument: self-sufficiency, frankness and the open street, and the answer 'a citizen of the cosmos'.

  6. Epictetus

    c. 50–c. 135

    Former slave and Stoic teacher at Nicopolis, whose Discourses and Encheiridion, taken down by Arrian, make the distinction between what is and is not up to us a daily exercise.

  7. Marcus Aurelius

    121–180

    Emperor whose notebooks — titled 'To Himself' in the manuscripts — written on campaign, are the fullest surviving record of Stoic exercise; initiated at Eleusis in 176.

  8. Porphyry

    c. 234–c. 305

    Plotinus' pupil and editor, who arranged the Enneads by subject and wrote the Life that frames them.

  9. Iamblichus

    c. 245–c. 325

    Syrian Platonist who ordered Plato's dialogues into a curriculum and set theurgy beside philosophy; the border between this dossier and the Theurgy page runs through him.

  10. Proclus

    412–485

    Head of the Platonic school at Athens for half a century; his Elements of Theology systematised the Neoplatonic universe the Middle Ages inherited.

  11. Boethius

    c. 477–524

    Roman senator who meant to put all of Plato and Aristotle into Latin, and whose Consolation of Philosophy, written awaiting execution, carried the schools' therapy into the Latin Middle Ages.

  12. Marsilio Ficino

    1433–1499

    Florentine translator whose complete Latin Plato (1484) and Plotinus (1492) restored the ancient curriculum to the West.

Source texts

  1. The Presocratic fragments (Diels-Kranz)

    Presocratic

    No Presocratic work survives whole; the corpus is a mosaic of quotations in later authors, each shaped by the purposes of the writer doing the quoting.

  2. Plato, Phaedo

    Platonic

    The death scene of Socrates and the definition of philosophy as the practice of dying — the founding exercise of the whole tradition.

  3. Aristotle, Nicomachean Ethics

    Aristotelian

    Lecture courses rather than a finished book; the argument that happiness is activity of soul in accordance with virtue, completed in contemplation.

  4. Epicurus, Letter to Menoeceus

    Epicurean

    Preserved whole in Diogenes Laertius; a compact regimen against the fear of death and the disorder of desire, written to be memorised.

  5. Epictetus, Encheiridion

    Stoic

    Arrian's handbook of his teacher's sayings; the dichotomy of control as a daily exercise, later adapted without embarrassment for Christian monastic use.

8 more source texts (of 13)

  1. Plotinus, Enneads

    Neoplatonic

    Porphyry's edition of the Rome seminars in six sets of nine treatises, arranged by subject from ethics up to the One rather than by date — the ordering of the text is itself an exercise.

  2. Pierre Hadot, Exercices spirituels et philosophie antique (1981)

    Modern scholarship

    The essays that recovered ancient philosophy as a way of life; enlarged in later editions and translated as Philosophy as a Way of Life in 1995.

  3. Plato, Republic VI-VII

    Platonic

    The sun, the divided line and the cave (506d-517c), the turning of the soul (518b-521c) and the curriculum of thirty years (521c-541b) — the page's bespoke section.

  4. Marcus Aurelius, Meditations

    Stoic

    Notebooks headed 'to himself', not written for publication; the book Hadot's The Inner Citadel (1992) reads as a manual of exercises.

  5. Boethius, The Consolation of Philosophy

    Late antique

    Philosophy, in person, administers the schools' remedies to a condemned man; among the most read philosophical books of the Latin Middle Ages.

  6. Diogenes Laertius, Lives of Eminent Philosophers

    Doxography

    Third-century compilation and the source of most anecdotes about the schools — Thales' sayings, Plato's name, Diogenes' replies — to be read for what it reports, not trusted for what it is.

  7. Plato, Seventh Letter

    Platonic (authenticity disputed)

    'There is no writing of mine about these things, nor will there be': the matter comes only after long living together with it, 'like light kindled from a leaping fire'.

  8. Pierre Hadot, Qu'est-ce que la philosophie antique? (1995)

    Modern scholarship

    Hadot's synthesis of the schools as ways of life, from the Presocratics to the Christian appropriation of the exercises; translated as What Is Ancient Philosophy? (2002).

Glossary

The vocabulary this dossier uses, with the register each definition belongs to. Terms the archive has spoken about link into transcript search; terms treated more fully on this page point there instead.

TheoriaGreek
Contemplation — the unhindered activity of the intellect upon what is highest, which Aristotle names the most complete human happiness. Search
AskesisGreek
Exercise or training — the repeated practice by which a doctrine ceases to be a proposition and becomes a disposition of the soul. Search
EudaimoniaGreek
Flourishing — the good life understood as activity rather than state, the end every school claimed its regimen delivered. Search
LogosGreek
Reason, speech, and the ordering principle of the cosmos at once — the Stoics' name for the divine fire that pervades and governs matter. Search
DaimonGreek
An intermediate spirit, or the divine element within the soul — Socrates' warning voice, and the being to which eudaimonia etymologically refers. Search
6 more terms (of 11)
AtaraxiaGreek
Untroubledness — the tranquillity that Garden and Stoa alike promised as the fruit of retrained desire and disciplined assent. Search
ProsocheGreek
Attention — continuous vigilance over one's judgements from moment to moment, Hadot's candidate for the fundamental attitude of the Stoic life. Search
PeriagogeGreek
The turning round of the soul: Plato's word for what education does — not putting sight into blind eyes, but turning the whole soul from what comes to be toward what is. Search
Melete thanatouGreek
The practice of death: the Phaedo's definition of philosophy as the soul's lifelong rehearsal of its separation from the body. Search
EpocheGreek
Suspension of judgement: the Sceptics' exercise, from Pyrrho to the sceptical Academy, of assenting to nothing not evident. Search
ParrhesiaGreek
Frankness: the Cynics' licence to say everything to anyone, practised as a discipline of freedom. Search

Editorial noteThis dossier is an Aetherica editorial research layer. It is designed to support deeper pages, archive search, future bibliographies, and interactive diagrams. Historical claims, symbolic readings, and modern esoteric interpretations should remain clearly labeled as the library expands.

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