Quick Answer
About a hundred and sixty lines survive of Parmenides, and they redirected the entire course of Greek philosophy. He argues that what is cannot come to be, cannot change and cannot be many, and he presents that argument as the speech of a goddess after a chariot journey. Reconciling those two facts is the whole problem.
Key Takeaways
- Everything after him is a response. Empedocles, Anaxagoras and the atomists built their systems to survive his argument, and Plato took it on directly.
- The text survived by accident. Simplicius copied the central passage out at length in the sixth century AD because the book had already become hard to find.
- The key word is undefined. Nobody can establish which sense of "is" Parmenides meant, and the interpretations diverge completely from that point.
- The proem is a revelation, not a preface. A goddess speaks the argument, and rationalist readings have never known quite what to do with her.
- The Velia inscriptions are real. What Peter Kingsley builds on them is not accepted by most classicists, and the underlying finds are worth knowing about either way.
🕑 14 min read
What Actually Survives
Parmenides of Elea, a Greek colony on the coast of southern Italy, wrote one work: a philosophical poem in dactylic hexameter, the metre of Homer. He was active in the early fifth century BC.
The book is lost. What we have is roughly a hundred and sixty lines quoted by later authors who happened to find them useful. Sextus Empiricus preserves the opening. Most of the central argument comes down through Simplicius, a Neoplatonist commentator writing in the sixth century AD, who transcribed long passages precisely because copies of Parmenides had already become scarce and he thought the text worth preserving.
So the survival of the most consequential argument in early Greek philosophy rests on one late commentator deciding to quote at length. That is worth holding in mind whenever you read a confident account of what Parmenides thought.
On reading fragments generally: a fragment arrives inside someone else's sentence, selected because it served their purpose, sometimes paraphrased, and with the surrounding argument gone. Every reconstruction of Parmenides involves deciding what order the pieces go in and what filled the gaps. Our guide to the fragments of Heraclitus deals with the same condition in an even more scattered corpus.
The Poem's Three Parts
The work divides into three, and the divisions matter more than in most philosophy.
The proem. A young man is carried in a chariot drawn by mares, escorted by the daughters of the sun who have left the house of night. They come to gates that separate the paths of night and day, guarded by Justice, who holds the keys. The maidens persuade her to open them. Beyond, a goddess receives the traveller kindly, takes his hand, and tells him he must learn all things, both the unshaken heart of well-rounded truth and the opinions of mortals in which there is no true reliance.
The Way of Truth. The goddess's argument. This is the philosophical core and the best preserved section.
The Way of Opinion. A cosmology of light and night, with rings of fire, a divinity in the centre steering all things, and an account of the heavens. The goddess presents it after declaring that mortal opinion is deceptive.
Note the structural fact that governs everything: after the opening lines, Parmenides never speaks in his own voice again. The philosophy is reported speech from a goddess.
The Argument
The goddess begins by laying out the only routes of inquiry available: that it is, and that it is not.
The second route is closed immediately, and the reason is the pivot of Western metaphysics. You cannot know what is not, and you cannot point it out, because there is nothing there to know or point at. What is not cannot be thought or spoken, because thinking and speaking require something to be about.
From that, the goddess derives what she calls the signs along the road of what-is, and the derivations are tight.
It cannot have come to be. If it came to be, it came from what is not, and there is no such thing to come from. There is also no reason why it would have arrived at one moment rather than another.
It cannot perish, by the same reasoning run backwards.
It cannot change, since changing means becoming what it was not.
It cannot be divided, since what would separate the parts would have to be what is not.
It is complete, held in limits, like the bulk of a well-rounded sphere, equal from the centre in every direction.
And in the most argued-over line in early Greek philosophy, the goddess states that the same thing is there for thinking and for being. What that sentence means has occupied philosophers for two and a half thousand years.
The force of this is easy to underestimate at a distance. Parmenides is not offering an intuition or a doctrine. He is running a deductive argument from a premise most people would grant, that you cannot think about nothing, to a conclusion that contradicts everything anyone observes. Each step follows. If you want to keep the world of change, you have to find the flaw, and finding it took a very long time.
What It Broke
Greek philosophy before Parmenides was largely a matter of proposing what things are made of and how they came to be arranged. After him, that whole enterprise had to justify itself.
Empedocles responded by proposing four unchanging elements that mix and separate without any of them coming to be or perishing, which preserves Parmenidean permanence at the level of ingredients while allowing change at the level of arrangement.
Anaxagoras responded by making everything present in everything from the start, so that nothing new ever appears and apparent generation is separation.
The atomists made the sharpest move. Democritus and Leucippus accepted the Parmenidean requirements for atoms, which are ungenerated, indestructible and internally changeless, and then simply asserted that what is not, the void, exists. That looks like a contradiction and is in fact the direct answer: if the void is real, division is possible and motion is possible.
Plato's Sophist confronts the argument head-on and commits what the dialogue itself calls parricide against Father Parmenides, breaking the deadlock by distinguishing not-being as difference from not-being as absolute nothing.
Read that sequence and the shape is clear: the history of Greek metaphysics for the next century and a half is the history of people trying to get out from under a hundred and sixty lines.
The Problem With the Word Is
Here is where any honest treatment has to admit how unsettled this is.
The Greek verb einai can be used existentially, meaning that something exists; predicatively, meaning that something is such-and-such; and veridically, meaning that something is the case. Parmenides uses the word constantly and never tells us which he means, and it is entirely possible the distinction was not yet available to be made.
Read existentially, the argument concludes that only one thing exists, unchanging, and that the world of many changing things is an illusion. This is the traditional reading and it makes Parmenides a strict monist.
Read predicatively, the argument is a criterion: whatever counts as a genuine being must be what it is completely and without qualification. That does not by itself rule out there being many such things, and it turns Parmenides into a theorist of what an entity has to be like rather than a denier of plurality. Patricia Curd's work develops this line, and John Palmer has argued for a modal reading in which the goddess is distinguishing what must be from what happens to be.
These are not shades of emphasis. They are different philosophies. A reader should know that the confident summary in most introductory books represents one option.
Why Include a False Cosmology
The second half of the poem is the standing embarrassment. The goddess has just said that mortal opinions carry no true reliance, and she then delivers a detailed cosmology.
It is also good cosmology for its date. The fragments and reports credit Parmenides with recognising that the moon shines by light borrowed from the sun, and with holding that the earth is spherical. Whatever the Doxa is, it is not stupid.
The proposed explanations are all partial. Perhaps it is the best account possible of a world that is itself deceptive, offered so the student is not deceived by worse ones. Perhaps it is a diagnosis, showing exactly how mortals go wrong by positing two forms where they should have posited one. Perhaps it is dialectical, a demonstration that any cosmology whatsoever must rest on an error. Perhaps Parmenides simply had views about astronomy and wanted to record them.
No answer commands agreement, and the fragments of this section are worse preserved than the Way of Truth, which makes the question harder to settle.
The Goddess and the Inscriptions
Now the part that most philosophy courses pass over quickly.
The proem is not a decorative frame. It is a journey to the gates of night and day, a passage granted by Justice, and a revelation from a goddess who takes the traveller's hand. Nothing in it is presented as metaphor. And the philosophy that follows is her speech.
The standard classical reading treats this as literary convention, an epic frame borrowed from Homer and Hesiod to lend authority to what is really a piece of reasoning. That is a reasonable reading and it leaves a residue.
Then there are the inscriptions. Excavations at Velia, the Roman name for Elea, between 1958 and 1962 produced marble inscriptions from the first century AD naming a lineage of figures with the titles Ouliades, connected to Apollo Oulios, and Physikos. One of them names Parmeneides son of Pyres. Another inscription carries the term pholarchos, lord of the lair or den. The related title iatromantis, healer-prophet, belongs to the same world.
Peter Kingsley, in In the Dark Places of Wisdom and Reality, builds from these finds an argument that Parmenides was a priest in a healing cult practising incubation, the technique of lying still in darkness to receive a dream or vision, and that the proem records that practice rather than imitating Homer.
The honest position has three parts. The inscriptions are real and they do show a healing cult at Velia attaching itself to Parmenides's name, which is a genuine and interesting fact that rationalist accounts tend to leave out. Kingsley's reconstruction goes well beyond what first-century inscriptions can establish about a fifth-century figure, and classicists have largely declined it, with M. David Litwa describing his interpretations as strained and eccentric. And Kingsley's books were published outside academic presses, which he has been open about, describing himself as a mystic rather than a detached scholar. A reader can hold all three of those at once, and should.
What remains after the dispute is a question worth carrying. A man produced the most severely rational argument in early Greek thought and placed it in the mouth of a goddess reached by a journey. Whatever the historical practice behind that, the combination is the text, and no reading that discards half of it is complete.
The Student Who Defended Him
Parmenides did not argue alone, and the defence is more famous than the position it defends.
Zeno of Elea was his student, and Plato's Parmenides has Zeno explain his own method plainly: his paradoxes were composed to defend the master by showing that the alternative is worse. If you laugh at Parmenides for denying motion and plurality, Zeno's reply is that accepting them commits you to absurdities of your own.
Hence Achilles and the tortoise, in which the faster runner can never overtake the slower because he must first reach where the slower was. Hence the arrow, which at every instant of its flight occupies a space equal to itself and is therefore at rest. Hence the dichotomy, in which crossing a room requires first crossing half of it, and half of that, without end.
These are not puzzles about arithmetic. They are attacks on the coherence of a world made of many things moving through divisible space and time, offered by a man whose teacher had argued that no such world can exist. Mathematics eventually supplied answers about infinite series, and philosophers continue to argue about whether the answers dissolve the paradoxes or only manage them.
The pairing matters for reading Parmenides. He is often presented as an isolated eccentric who denied the obvious. He was the head of a school with a student capable of constructing the most durable paradoxes in the history of philosophy specifically to protect the position.
Practice: hold the conclusion for one hour
Parmenides is unusual in that his argument can be tested against experience directly, because the conclusion is about the experience you are having. Spend an hour treating the claim as true: that what is has never come to be, does not change, and is not divided into parts. Notice what happens to your sense of the room. Contemplative traditions from several cultures arrive at descriptions strikingly close to this, and they get there by practice rather than by deduction. Parmenides got there by deduction and reported it as a revelation, which is either a coincidence or the most interesting fact about him.
Which Edition to Buy
Laks and Most, Early Greek Philosophy (Loeb Classical Library). The current standard reference, with Greek and facing English, replacing the old Diels-Kranz numbering for new work. Parmenides occupies one volume alongside related material.
David Gallop, Parmenides of Elea (Toronto). Bilingual, affordable, well introduced. The best single volume for someone who wants the text and a guide.
A. H. Coxon, The Fragments of Parmenides. The critical edition, with the testimonia and full apparatus. Expensive and thorough.
Kirk, Raven and Schofield, The Presocratic Philosophers. Still the best introduction to the whole period, with the Parmenides chapter placing him among his contemporaries.
On the cheap paperbacks: a search will return several inexpensive volumes titled fragments of Parmenides. Most reprint Victorian or Edwardian translations that are out of copyright, occasionally without naming the translator at all. Since the surviving text is only a hundred and sixty lines, what you are actually buying is the translation and the notes, and those are exactly what the cheap editions omit. Buy a named modern edition.
Who Should Read It
Read it if you want to see where Western metaphysics starts. Everything downstream, including a good deal of theology, is working within a frame this poem set.
Read it if you like arguments that arrive at impossible conclusions by valid steps, which is a specific pleasure and this is one of its purest instances.
Read the proem carefully rather than skipping to the philosophy. It is a third of what survives and it is the part that makes the text strange.
Do not expect to finish understanding it. This is a field where the primary text is thirty minutes and the secondary literature is a career.
Our position: a hundred and sixty lines that no summary can substitute for, arriving through a chain of accidents, in a Greek whose central verb nobody can pin down, framed as a revelation from a goddess. Buy Gallop, read the proem as seriously as the argument, treat the confident summaries as one option among several, and know that the inscriptions at Velia are real even though what has been built on them is contested.
For neighbouring material, see Heraclitus, whose doctrine of flux is the direct opposite position, and Plato's Timaeus for what a cosmology looks like once it has absorbed the Parmenidean requirement that the real must be unchanging.
Thirty minutes of reading, two and a half thousand years of argument.
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Frequently Asked Questions
What are the fragments of Parmenides?
About 160 lines surviving from a single philosophical poem in Greek hexameter, written around the early fifth century BC by Parmenides of Elea. Nothing of his work survives as a book. Everything we have was quoted by later writers, and most of the central argument comes down through the sixth century commentator Simplicius.
What does Parmenides argue?
That there are only two ways of inquiry, that it is and that it is not, and that the second is unthinkable because you cannot think or say what is not. From that he derives that what is must be ungenerated, imperishable, whole, unmoving and complete, which means that change and coming-to-be are not real.
Why is he important?
Because everything in Greek philosophy after him is a response to him. Empedocles, Anaxagoras and the atomists all constructed their systems to preserve appearances against his argument, and Plato's Sophist takes it on directly. He is the point at which Greek thought becomes deductive rather than descriptive.
What is the Way of Opinion?
The second half of the poem, in which the goddess gives a cosmology of light and night that she has just declared deceptive. Why a false account is included at all is one of the standing puzzles. Suggestions range from a best-possible account of appearances to a demonstration of how error is generated.
What is the dispute about the word is?
The Greek verb can carry existential, predicative and veridical senses, and Parmenides never says which he means. Reading it as existence produces the claim that only one thing exists. Reading it predicatively produces a criterion for what can count as a genuine entity. The interpretations are still argued.
What happens in the proem?
A young man is carried in a chariot by mares along a road, escorted by the daughters of the sun, through gates guarded by Justice, and is received by an unnamed goddess who tells him he must learn all things. Everything that follows is her speech, not his.
Was Parmenides a mystic or a logician?
That question is the live dispute. The argument is rigorously deductive and the framing is a revelation received from a goddess after a journey. Standard readings treat the frame as a literary convention. Peter Kingsley argues it records an actual incubatory practice, and classicists have largely not accepted his reconstruction.
What do the Velia inscriptions show?
Marble inscriptions excavated at Velia between 1958 and 1962, dating to the first century AD, name a lineage that includes Parmeneides son of Pyres, with the titles Ouliades and Physikos, and elsewhere the term pholarchos. They show a healing cult connected to Apollo attaching itself to his name. What that means for the poem is contested.
Is Peter Kingsley's reading accepted?
Not by most classicists. His books are widely read and were published outside academic presses, and specialists have described his interpretations as strained and eccentric. The inscriptions he builds on are real and the reconstruction he draws from them goes considerably beyond what they establish.
Which edition should I buy?
The Loeb Early Greek Philosophy volumes edited by Laks and Most give the Greek with facing English and are now the standard reference. David Gallop's bilingual edition is excellent and affordable. A. H. Coxon's critical edition is the scholarly one. Kirk, Raven and Schofield remains the best single introduction.
Are the cheap paperback editions worth buying?
Usually not. Most are reprints of Victorian or Edwardian translations that are out of copyright, sometimes without naming the translator. The fragments are short enough that the quality of the translation and the notes is most of what you are paying for. Buy a named modern edition.
How long does it take to read?
The surviving text is about half an hour. Understanding it is a different matter, and the ratio of commentary to primary text in this field is among the highest in philosophy. Expect to read the fragments many times and a great deal else alongside them.
Try to find the flaw yourself
Before reading any commentary, read the Way of Truth and try to locate the step where the argument goes wrong. Do not look it up. Sit with it for a week. Whatever you come up with, someone has proposed and someone else has answered, and arriving at your own objection first is the only way to understand why it took Plato to break the deadlock and why the break cost him a distinction nobody had made before.
Sources & References
- Laks, A. and Most, G. W., eds. (2016). Early Greek Philosophy. Loeb Classical Library, Harvard University Press.
- Gallop, D. (1984). Parmenides of Elea: Fragments. University of Toronto Press.
- Coxon, A. H. The Fragments of Parmenides, revised edition. Parmenides Publishing.
- Kirk, G. S., Raven, J. E. and Schofield, M. (1983). The Presocratic Philosophers, 2nd edition. Cambridge University Press.
- Curd, P. (1998). The Legacy of Parmenides. Princeton University Press.
- Palmer, J. (2009). Parmenides and Presocratic Philosophy. Oxford University Press.
- Kingsley, P. (1999). In the Dark Places of Wisdom. Golden Sufi Center, and (2003) Reality.
- Simplicius. Commentary on Aristotle's Physics, the principal source for the Way of Truth.