Posts by Cassius

And of course Heraclitus comes in for direct mention in Lucretius:

1-635 (continuing in following sections....)

Wherefore those who have thought that fire is the substance of things, and that the whole sum is composed of fire alone, are seen to fall very far from true reasoning. Heraclitus is their leader who first enters the fray, of bright fame for his dark sayings, yet rather among the empty-headed than among the Greeks of weight, who seek after the truth. For fools laud and love all things more which they can descry hidden beneath twisted sayings, and they set up for true what can tickle the ear with a pretty sound and is tricked out with a smart ring.

There is also a lot of good discussion at the Internet Encyclopedia of Philosophy:

2. Theory of Knowledge

Heraclitus sees the great majority of human beings as lacking understanding:

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Of this Word’s being forever do men prove to be uncomprehending, both before they hear and once they have heard it. For although all things happen according to this Word they are like the unexperienced experiencing words and deeds such as I explain when I distinguish each thing according to its nature and declare how it is. Other men are unaware of what they do when they are awake just as they are forgetful of what they do when they are asleep. (DK22B1)

Most people sleep-walk through life, not understanding what is going on about them. Yet experience of words and deeds can enlighten those who are receptive to their meaning. (The opening sentence is ambiguous: does the ‘forever’ go with the preceding or the following words? Heraclitus prefigures the semantic complexity of his message.)

On the one hand, Heraclitus commends sense experience: “The things of which there is sight, hearing, experience, I prefer” (DK22B55). On the other hand, “Poor witnesses for men are their eyes and ears if they have barbarian souls” (DK22B107). A barbarian is one who does not speak the Greek language. Thus while sense experience seems necessary for understanding, if we do not know the right language, we cannot interpret the information the senses provide. Heraclitus does not give a detailed and systematic account of the respective roles of experience and reason in knowledge. But we can learn something from his manner of expression.

Describing the practice of religious prophets, Heraclitus says, “The Lord whose oracle is at Delphi neither reveals nor conceals, but gives a sign” (DK22B93). Similarly, Heraclitus does not reveal or conceal, but produces complex expressions that have encoded in them multiple messages for those who can interpret them. He uses puns, paradoxes, antitheses, parallels, and various rhetorical and literary devices to construct expressions that have meanings beyond the obvious. This practice, together with his emphasis on the Word (Logos) as an ordering principle of the world, suggests that he sees his own expressions as imitations of the world with its structural and semantic complexity. To read Heraclitus the reader must solve verbal puzzles, and to learn to solve these puzzles is to learn to read the signs of the world. Heraclitus stresses the inductive rather than the deductive method of grasping the world, a world that is rationally structured, if we can but discern its shape.

For those who can discern it, the Word has an overriding message to impart: “Listening not to me but to the Word it is wise to agree that all things are one” (DK22B50). It is perhaps Heraclitus’s chief project to explain in what sense all things are one.

3. The Doctrine of Flux and the Unity of Opposites

According to both Plato and Aristotle, Heraclitus held extreme views that led to logical incoherence. For he held that (1) everything is constantly changing and (2) opposite things are identical, so that (3) everything is and is not at the same time. In other words, Universal Flux and the Identity of Opposites entail a denial of the Law of Non-Contradiction. Plato indicates the source of the flux doctrine: “Heraclitus, I believe, says that all things go and nothing stays, and comparing existents to the flow of a river, he says you could not step twice into the same river” (Cratylus 402a = DK22A6).

What Heraclitus actually says is the following:

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On those stepping into rivers staying the same other and other waters flow. (DK22B12)

There is an antithesis between ‘same’ and ‘other.’ The sentence says that different waters flow in rivers staying the same. In other words, though the waters are always changing, the rivers stay the same. Indeed, it must be precisely because the waters are always changing that there are rivers at all, rather than lakes or ponds. The message is that rivers can stay the same over time even though, or indeed because, the waters change. The point, then, is not that everything is changing, but that the fact that some things change makes possible the continued existence of other things. Perhaps more generally, the change in elements or constituents supports the constancy of higher-level structures.As for the alleged doctrine of the Identity of Opposites, Heraclitus does believe in some kind of unity of opposites. For instance, “God is day night, winter summer, war peace, satiety hunger . . .” (DK22B67). But if we look closer, we see that the unity in question is not identity:

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As the same thing in us is living and dead, waking and sleeping, young and old. For these things having changed around are those, and conversely those having changed around are these. (DK22B88)

The second sentence in B88 gives the explanation for the first. If F is the same as G because F turns into G, then the two are not identical. And Heraclitus insists on the common-sense truth of change: “Cold things warm up, the hot cools off, wet becomes dry, dry becomes wet” (DK22B126). This sort of mutual change presupposes the non-identity of the terms. What Heraclitus wishes to maintain is not the identity of opposites but the fact that they replace each other in a series of transformations: they are interchangeable or transformationally equivalent.

Thus, Heraclitus does not hold Universal Flux, but recognizes a lawlike flux of elements; and he does not hold the Identity of Opposites, but the Transformational Equivalence of Opposites. The views that he does hold do not, jointly or separately, entail a denial of the Law of Non-Contradiction. Heraclitus does, to be sure, make paradoxical statements, but his views are no more self-contradictory than are the paradoxical claims of Socrates. They are, presumably, meant to wake us up from our dogmatic slumbers.

I've moved this over to a new thread so that it will be easier over time to explore this precise relationship. In the meantime pending a better source of quotes, here is what Wikipedia says:

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Little is known of Heraclitus's life. He wrote a single work, only fragments of which have survived. Even in ancient times, his paradoxical philosophy, appreciation for wordplay, and cryptic, oracular epigrams earned him the epithets "the dark" and "the obscure". He was considered arrogant and depressed, a misanthrope who was subject to melancholia. Consequently, he became known as "the weeping philosopher" in contrast to the ancient atomist philosopher Democritus, who was known as "the laughing philosopher".

The central ideas of Heraclitus's philosophy are the unity of opposites and the concept of change. Heraclitus saw harmony and justice in strife. He viewed the world as constantly in flux, always "becoming" but never "being". He expressed this in sayings like "Everything flows" (Greek: πάντα ῥεῖ, panta rhei) and "No man ever steps in the same river twice". This insistence upon change contrasts with that of the ancient philosopher Parmenides, who believed in a reality of static "being".

...

Heraclitus is said to have produced a single work on papyrus,^[a] which has not survived; however, over 100 fragments of this work survive in quotations by other authors.^{[note 5]} The title is unknown,^[20] but many later writers refer to this work, and works by other pre-Socratics, as On Nature.^[21][a]...

The opening lines are quoted by Sextus Empiricus:

Of the logos being forever do men prove to be uncomprehending, both before they hear and once they have heard it. For although all things happen according to this logos they are like the unexperienced experiencing words and deeds such as I explain when I distinguish each thing according to its nature and declare how it is. Other men are unaware of what they do when they are awake just as they are forgetful of what they do when they are asleep.^[x]

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Also:

Diogenes Laërtius relays the story that the playwright Euripides gave Socrates a copy of Heraclitus's work and asked for his opinion. Socrates replied: "The part I understand is excellent, and so too is, I dare say, the part I do not understand; but it needs a Delian diver to get to the bottom of it."^[38]

There is one passage the relevance of which I think is underappreciated in the prolepsis discussion. This below from fragment 5 of Diogenes of Oinoanda gets referenced frequently in regard to Epicurus' canon in general, but I wonder if it not a specific reference to the function of prolepsis:

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Fr. 5
....

Now Aristotle and those who hold the same Peripatetic views as Aristotle say that nothing is scientifically knowable, because things are continually in flux and, on account of the rapidity of the flux, evade our apprehension. We on the other hand acknowledge their flux, but not its being so rapid that the nature of each thing [is] at no time apprehensible by sense-perception. And indeed [in no way would the upholders of] the view under discussion have been able to say (and this is just what they do [maintain] that [at one time] this is [white] and this black, while [at another time] neither this is [white nor] that black, [if] they had not had [previous] knowledge of the nature of both white and black.

When you're living in an age when most every educated person would be aware that Heraclitus has said everything is in such flux and flows so fast that it is impossible to apprehend anything at all, you need a description of the process by which you DO apprehend things and make sense of them.

I wonder if prolepsis then might best be understood as Epicurus' answer not just to Plato and Aristotle, who were themselves apparently responding to Heraclitus by postulating that there are true forms or essences (neither of which exist).

Epicurus' prolepsis provides the foundation of an answer to Heraclitus' flux challenge in a natural faculty, just like pleasure and pain, to how we actually understand the things around us without reliance on forms or esences which do not exist, or on preexisting innate ideas from a time before birth. In providing a theory of understand the assembly of knowledge, it is parallel to atomism in providing a theory of physics.

Even as to the title we generally give to Lucretius' poem, how would we know what a "thing" is, or distinguish one "thing" from another, if we did not have a faculty which continuously organizes the raw data from the senses into something intelligible?

As I understand it there are not many reliable quotations from Heraclitus available, but those that do make it clear that this "flux" problem demanded a real-world answer.

Thanks Eikadistes. I want to revamp our way of accessing and discussing the Doctrines and Sayings and I will work to incorporate those crossreferences in whatever I come up with.

Quote from Eikadistes

This might be a sort of marker about the limits of un-disturbedness.

I think this is correct Eikadistes. What I think we can see in the discussion in Tusculan Disputations is that the Stoics were asserting that the good/wise/happy man is going to have no part of evil, and therefore we cannot ever label pain as evil. Epicurus is willing to call pain evil, but he knows that the happy man will still have times when he experiences pain, so he stresses that we can still be happy even when we are in pain, as in his last days.

Epicurus' view of happiness is therefore much more logical and consistent with human experience than that of the Stoics.

This discussion thread will serve as a crossreference to the new blog article posted by Elli.

PRINCIPAL DOCTRINE XIV – ANALYSIS & CONTEMPORARY APPLICATION - Epicureanfriends.com

PRINCIPAL DOCTRINE XIV – ANALYSIS & CONTEMPORARY APPLICATIONThis work was authored by George Kaplanis, a retired notary and founding member of the Group for…

www.epicureanfriends.com

The blog feature of the forum has a place at the bottom of the article to allow for quick comments, but if someone wants to discuss the article I recommend doing that HERE - in this discussion thread - so it is more easily findable later.

Yes I will make sure there are several different ways to find all the threads tagged with a particular doctrine number.

In the near future, we will eliminate the subforums currently located within the "Principal Doctrines" and "Vatican Sayings" forums. Most of these forums only have one or two threads on each item, and we will rename each thread to start with, for example, "PDO1" or "VSO1" rather than have forty or eighty-three separate subforums that are time-consuming to scroll through. If anyone has any comment or suggestion about this reorganization before we implement it, let us know here.

Note: It may not be possible to sort a large forum by title so as to get them in order (e.g., PD01, PD02, etc) but it will be possible to set up a page where each doctrine's post can be located by tag, which is similar to the method we are using to organize tags on this page below:

Search Assistance - Epicureanfriends.com

www.epicureanfriends.com

Crossreference:

As it will be relevant to this podcast series on Part 3 of Tusculan Disputations, please post any links to articles or publicly-available material relevant to Philodemus' "On Anger" in this thread below:

Thread

Philodemus' "On Anger" - General - Texts and Resources

I have long suspected that a number of people who come to Epicurus from other philosophies or religious backgrounds tend to presume that Epicurus was very passive and frowned on all forms of anger. This topic comes back to mind after our most recent A Few Days In Athens Discussion (on Chapter Eight ) in regard to the exchange between Metrodorus and Epicurus on the subject near the end of the Chapter.

Frances Wright does not develop this issue very far, but I think it's important for us to…

Cassius

April 1, 2022 at 5:36 PM

This topic is going to be relevant to our discussions of Part 3 of Cicero's "Tusculan Disputations."

At the moment the primary source is probably the 2020 SBL Press version translated by David Armstrong and Michael McOsker.

Philodemus, On Anger (Writings from the Greco-roman World) (Writings from the Greco-Roman World, 45)

It appears that the edition linked below may be the same as that listed on Amazon:

An Epicurean Theory of Anger: A New Edition of Philodemus’ De Ira (PHerc. 182)

www.rivisteweb.it

If anyone knows of any material on "On Anger" that is publicly accessible on the internet, please post here in this thread.

Happy Birthday to jason! Learn more about jason and say happy birthday on jason's timeline: jason

Definitely the book and our podcast interview with Marcello Boeri!

Thread

Episode 197 -LucretiusToday Interviews Dr. Marcelo Boeri

Welcome to Episode 197 of the Lucretius Today Podcast. Today we are very privileged to present to you an interview with Dr. Marcelo Boeri, Professor of Ancient Philosophy at the Pontifical Catholic University of Chile. Dr. Boeri is originally from Buenos Aires, and after receiving his Ph.D. from the University of Salvador in 1995, he has worked extensively in the field of Ancient Greek philosophy ever since, lecturing at many distinguished universities around the world.

We are greatly…

Cassius

October 22, 2023 at 7:36 AM

Crossreference:

Thread

Special Emphasis On "Emotions" In Lucretius Today Podcast / Tusculan Disputations - Should Everyone Aspire To Emulate Mr. Spock?

Beginning with Episode 288 of the Lucretius Today Podcast recorded today, for the next six weeks or longer we are going to be dealing with important issues as to emotions: Should emotions be considered to be "diseases," as Cicero explains is implied in the Greek "pathe" terminology, or considered as "perturbation" as he says in Latin?

Should all strong emotions be suppressed by the wise man, as the Stoics suggest, or is the wise man going to experience strong emotions?

These issues are discussed…

Cassius

June 29, 2025 at 3:39 PM

Beginning with Episode 288 of the Lucretius Today Podcast recorded today, for the next six weeks or longer we are going to be dealing with important issues as to emotions: Should emotions be considered to be "diseases," as Cicero explains is implied in the Greek "pathe" terminology, or considered as "perturbation" as he says in Latin?

Should all strong emotions be suppressed by the wise man, as the Stoics suggest, or is the wise man going to experience strong emotions?

These issues are discussed in Part 3 of Tusculan Disputations, which begins here.

Cicero criticizes the Stoics for playing word games with these issues, but to some extent it is in fact necessary for us to explore the meaning of the word choices we use to be sure we are not accepting false or misleading labeling.

I suggest that over the next couple of weeks when we are looking for topics for meetings that we begin exploring this topic in more detail. This subforum will be a good place to post threads on this topic.

Welcome Welcome SamSara73

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You must post your response within 24 hours, or your account will be subject to deletion.

Please say "Hello" by introducing yourself, tell us what prompted your interest in Epicureanism and which particular aspects of Epicureanism most interest you, and/or post a question.

This forum is the place for students of Epicurus to coordinate their studies and work together to promote the philosophy of Epicurus. Please remember that all posting here is subject to our Community Standards and associated Terms of Use. Please be sure to read that document to understand our ground rules.

Please understand that the leaders of this forum are well aware that many fans of Epicurus may have sincerely-held views of what Epicurus taught that are incompatible with the purposes and standards of this forum. This forum is dedicated exclusively to the study and support of people who are committed to classical Epicurean views. As a result, this forum is not for people who seek to mix and match Epicurean views with positions that are inherently inconsistent with the core teachings of Epicurus.

All of us who are here have arrived at our respect for Epicurus after long journeys through other philosophies, and we do not demand of others what we were not able to do ourselves. Epicurean philosophy is very different from most other philosophies, and it takes time to understand how deep those differences really are. That's why we have membership levels here at the forum which allow for new participants to discuss and develop their own learning, but it's also why we have standards that will lead in some cases to arguments being limited, and even participants being removed, when the purposes of the community require it. Epicurean philosophy is not inherently democratic, or committed to unlimited free speech, or devoted to any other form of organization other than the pursuit of truth and happy living through pleasure as explained in the principles of Epicurean philosophy.

One way you can be assured of your time here will be productive is to tell us a little about yourself and your background in reading Epicurean texts. It would also be helpful if you could tell us how you found this forum, and any particular areas of interest that you already have.

You can also check out our Getting Started page for ideas on how to use this website.

We have found over the years that there are a number of key texts and references which most all serious students of Epicurus will want to read and evaluate for themselves. Those include the following.

"Epicurus and His Philosophy" by Norman DeWitt

The Biography of Epicurus by Diogenes Laertius. This includes the surviving letters of Epicurus, including those to Herodotus, Pythocles, and Menoeceus.

"On The Nature of Things" - by Lucretius (a poetic abridgement of Epicurus' "On Nature"

"Epicurus on Pleasure" - By Boris Nikolsky

The chapters on Epicurus in Gosling and Taylor's "The Greeks On Pleasure."

Cicero's "On Ends" - Torquatus Section

Cicero's "On The Nature of the Gods" - Velleius Section

The Inscription of Diogenes of Oinoanda - Martin Ferguson Smith translation

A Few Days In Athens" - Frances Wright

Lucian Core Texts on Epicurus: (1) Alexander the Oracle-Monger, (2) Hermotimus

Philodemus "On Methods of Inference" (De Lacy version, including his appendix on relationship of Epicurean canon to Aristotle and other Greeks)

"The Greeks on Pleasure" -Gosling & Taylor Sections on Epicurus, especially the section on katastematic and kinetic pleasure which explains why ultimately this distinction was not of great significance to Epicurus.

It is by no means essential or required that you have read these texts before participating in the forum, but your understanding of Epicurus will be much enhanced the more of these you have read. Feel free to join in on one or more of our conversation threads under various topics found throughout the forum, where you can to ask questions or to add in any of your insights as you study the Epicurean philosophy.

And time has also indicated to us that if you can find the time to read one book which will best explain classical Epicurean philosophy, as opposed to most modern "eclectic" interpretations of Epicurus, that book is Norman DeWitt's Epicurus And His Philosophy.

(If you have any questions regarding the usage of the forum or finding info, please post any questions in this thread).

Welcome to the forum!

Happy Birthday to EyalA! Learn more about EyalA and say happy birthday on EyalA's timeline: EyalA

Here's our prior discussion on the Frischer book:

Bernard Frischer's "The Sculpted Word"

Others may have better suggestions than I do. I don't recall that we have a podcast on that, but there is book devoted to something close to that -- "The Sculpted Word" by Bernard Frischer, which discusses Epicurean use of art in portraying Epicurus.

Thanks for your response. I will talk with the other moderators about inviting you to something soon. In the meantime, I can recommend that you look into the LucretiusToday podcast here at the forum and on all podcast sources. We regularly have three to four of our members here participating in that, and I think it would give you a very good idea of what live discussions might be like. The podcast is edited and much more structured than our live meetings, where we devote much of the time to questions and exchange of ideas, but it sounds like the podcast might fit the bill for what you are looking for. On our main page we have a number of sample episodes highlighted which would be a good place to start.

You might want to check out in particular our 200th episode special where we talked about where we have been and where we are going.

Post

Episode 200 - Lucretius Today 200th Episode - Retrospective, Recap, and Looking To The Future

Welcome to Episode 200 of Lucretius Today. This is a podcast dedicated to the poet Lucretius, who wrote "On The Nature of Things," the only complete presentation of Epicurean philosophy left to us from the ancient world. Each week we walk you through the Epicurean texts, and we discuss how Epicurean philosophy can apply to you today. If you find the Epicurean worldview attractive, we invite you to join us in the study of Epicurus at EpicureanFriends.com, where you will find a discussion thread…

Cassius

October 30, 2023 at 3:04 AM