Thursday, September 27, 2012

Logic: Greek Skepticism

HERACLITUS

Heraclitus (535 - 475 BCE) was born in Ephesus on the West coast of modern day Turkey.  An educated child of aristocrats, Heraclitus came to an understanding similar to that of the earlier Xenophanes and the later Socrates: No one can ever know the truth entirely, and so we should continue to seek truth endlessly to become wise.  Diogenes Laertius, the historian of philosopher biographies, says Heraclitus was to be king of Ephesus but abdicated the throne to become a sage.  Some scholars have suggested that Heraclitus was in fact Buddha, and that the teachings of Heraclitus, many similar to teachings of the Buddha, came from India into Greece or from Greece into India.  While I am a big fan of cross-cultural transmissions, this is rather far fetched.  It is likelier that Heraclitus and Buddha are both skeptical of human judgements, arguing all things including judgements and truth are impermanent and changing, and this position is found accross human cultures.

Heraclitus was very critical of everyone, particularly the early Greek philosophers and his fellow Ephesians.  Like the Athenians killed Socrates for questioning too much and so “inciting the youth to riot”, Ephesus had exiled Hermadoros because was ‘worthier than average’, presumably doing philosophy and cosmology.  Heraclitus responded:

As for the Ephesians, I would have them all go hang themselves, leaving the city in the abler hands of children, for they banished Hermodorus, the best man among them, saying ‘Let no one of us excel, or if he does let him do it elsewhere among others.  May wealth never leave you, Ephesians, lest your wickedness be revealed.

Just like many other great thinkers, Heraclitus did not like the politics of his day and was critical of traditions of thought in general.  Heraclitus was not, however, sad or angry as much as he was a skeptic.  Heraclitus was called ‘the weeping philosopher’ by a few sources in the ancient world, as well as ‘the dark’ and ‘the obscure’.  Democritus is called the laughing philosopher, and Heraclitus the weeping, both disgusted by humanity.  Juvenal, the Roman poet (not the American rapper) wrote that, given the post popular prayer in temples is for riches, it is no wonder that Democritus laughs and Heraclitus weeps.  In Raphael’s famous painting ‘The School of Athens’, Heraclitus is portrayed looking downward with a somber expression sitting off by himself near the bottom center, unlike other philosophers and scientists who are enthusiastically conversing about the cosmos in groups.

Heraclitus does seem to laugh, and many of his fragments appear playful jokes.  Despising the beliefs, traditions and politics of the day does not make one a sad or angry person relative to others.  Rather, it turns criticism of the other into criticism of the self and one’s own civilization.  Heraclitus was convinced that wisdom and inquiring within show us that all is one big cosmic fire, and things that unify the community and the individual bring wholeness and true happiness.  However, he believed that humans are often foolish and let their minds divide themselves from the whole and from each other such that their understandings are disjointed and ignorant.

Diogenes Laertius says Heraclitus often tired of people and would walk in the hills by himself, similar to the later Heraclitus-influenced German philosopher Nietzsche.  Both wrote that people are apes and only the few become wise and see things as a great individual.  In his Beyond Good and Evil, Nietzsche wrote in response to the rising German anti-semitism of his time that a race is good for getting to six or seven great men, and then getting around them.

Diogenes Laertius also says that Heraclitus wrote a book ‘On Nature’ which had three parts (the first about cosmology, the second about politics, and the third about theology).  We only have the introduction and various fragments remaining today, known as the Fragments of Heraclitus, but his book was famous among later ancient Greek thinkers.  Heraclitus deposited his book at the Great Temple of Artemis in Ephesus, one of the seven wonders of the ancient world.  Artemis, daughter of Zeus and twin sister of Apollo, was the widely revered Greek goddess of hunting and the wilderness (counterpoint to Apollo, god of agriculture and civilization).

Heraclitus is said by other sources to have been a doctor, and many of his fragments do speak about the workings of physiology within the larger frame of physics as a thinker who is immersed in ancient cosmology would.  Heraclitus believed that the soul, mind and self becomes soggy and intoxicated when one indulges in desire and pleasure (drinking and sex are moist by nature), and likewise when one studies with the fire of the mind and abstains from pleasure the soul dries out.  While this could come from a physician, some fragments seem critical of physicians and the practice of medicine just as others are critical of philosophers, spiritual groups and politics.  In one fragment he writes:

The cosmos works by harmony of tensions, like the lyre and bow.  Therefore, good and ill are one.  Good and ill to the physician must be one, since he derives his fee from torturing the sick.

Heraclitus’ most famous idea is a memorable image: you can never step in the same river twice.  Just as a river is always flowing and changing, so is reality always flowing and changing, such that nothing stays exactly the same for any two moments.  You step in a river, then step out, then step back in the same river, but it is no longer ‘the same river’.  Heraclitus says this is also true of the cosmos and the human individual.  One fragment reads:

We do and do not step into the same river.  We are and are not.

Heraclitus argued that the world is always in flux, as a single thing stable and eternal but as many things in constant change and tension.  Paradoxically, constant change is the stability and being of things.  Rivers flow, fire burns, life thrives, always in motion to be stable in what it is.  If things stop moving and growing the way that they do, they disintegrate and fall apart.  In what often appears as a strange and out-of-place fragment, Heraclitus says, “Goat cheese congeals in wine if not well stirred”.  This is an example of a motion keeping a mixture what it is.  Red wine mixed with goat cheese was a common beverage served at gatherings.

While his famous image is of water in a river, Heraclitus argued that fire is the arche, the most basic element that forms and moves all things.  All things are part of the eternal fire, flowing like water, and ordered by the word/breath/air of the cosmos itself.  While Heraclitus differs from the early Milesians in the selection of fire as his arche, he seems to be bringing Thales (who argued all things are water), Anaximander (who argued that all things are of the one infinite) and Anaximenes (who argued that all things are air) into line with his own position, agreeing yet disagreeing with them.  Heraclitus wrote:

That which always was, and is, and will be ever-living fire, the same for all, the cosmos, made neither by god nor man, replenishes in measure as it burns away…As all things change to fire, and fire exhausted falls back into things, the goods are sold for gold, the gold spent on goods.

Fire is desire and satisfaction.

How, from a fire that never sinks or sets, would you escape?  One thunderbolt strikes root through everything.

Fire also flows, and individual tongues of flame rise out of the fire and then return and integrate with the whole.  Fire, like water, flows in a consistent manner that is always self-similar but never exactly the same twice, just as each person, wave or flame is individual and distinct.  Notice that a thunderbolt, such as that hurled as a weapon by Zeus and which the ancient Greeks thought was made of fire, is the energy and cause of formation for the cosmos, though Heraclitus does not mention Zeus by name.  The Zoroastrians of Persia held fire as the highest element and identified it with their monotheistic god.  It is possible that Heraclitus is influenced by Persian Zoroastrians while taking it in his own direction, just as he does with the work of the Milesian school.  Zoroastrians also believe that the cosmos is ordered by divine speech, by the word and command of the cosmos.  The beginning of Heraclitus’ book, which we still have, reads:

The word proves those first hearing it as numb to understanding as the ones who have not heard, yet all things follow from the word.  Some, blundering with what I set before you, try in vain with empty talk to separate the essences of things and say how each thing truly is, and all the rest make no attempt.  They no more see how they behave broad waking than remember clearly what they did asleep.  For wisdom, listen not to me but to the word and know that all is one.  Those unmindful when they hear, for all they make of their intelligence, may be regarded as the walking dead.  People dull their wits with gibberish, and cannot use their ears and eyes.  Many fail to grasp what they have seen, and cannot judge what they have learned, although they tell themselves they know.  Yet they lack the skill to listen or to speak.  Whoever cannot seek the unforeseen sees nothing, for the known way is an impasse.  Things keep their secrets.

The ‘word’ is ‘logos’ in ancient Greek, from which we get the word ‘logic’.  In the ancient world, the art of logic was used for debate and persuasion.  Plato and later Greek philosophers used this conception, but it is first used by Heraclitus.  It is very ironic, quite paradoxical like the thinking of Heraclitus, that he, a serious skeptic, was the first Greek thinker to use this word, which would later be dominated by thinkers such as Aristotle who did not believe in relativity and skepticism.

For Heraclitus, the cosmos resembles the chaos yet order of the human community centered on authority by spoken word.  The LOGOS, the word/plan/order/command, is the formative force in the cosmos, the force of fire and light in the watery chaotic world.  The cosmic fire speaks with its ever-present Logos (fire over air) and this brings about the firmament in the chaos (the earth rising out of the water).  This process, however, does not bring about eternal or stable beings, but chains of beings that are in flux and interdependent, much in line with the Buddhist concept of codependent arising.

This goes also for laws, which Heraclitus says have to be defended as if they were city walls.  This is sometimes read that Heraclitus thought human law was important and had to be defended, which he did, but in fact he is also telling us that human laws, perspectives and judgements are impermanent like walls made out of earth.  They may seem eternal and permanent, but as any former citizen or city of the Persian empire knows, empires fall and impressive city states are overthrown and change hands.  The eternal word of the fire forever forms the cosmos, but human speech and walls are temporary, and therefore take force and effort to maintain.

As a skeptic, Heraclitus believes that the divisions made by the mind are mortal, not eternal, like the human body.  Our knowledge and laws are impermanent like mounds of dirt.  Heraclitus says many things to humble us, including pointing out our similarity to apes to put our achievements in perspective.  Notice in the opening passage that some incorrectly try to separate the essences of things, and the rest are completely ignorant and asleep.  Heraclitus was not a fan of experts and specialists, and he ridiculed the cultural leaders of his time.  He says that the common people are completely asleep, but far more dangerous are the experts who have a small piece of the puzzle and say that they know the entire truth, who have a perspective they confuse with the objective omnipotent view.  Following Xenophanes, Heraclitus argues that we never know the complete truth about anything, which is why we must continue endlessly to gather insights.

Many often ask, “Why, then, should I listen to Heraclitus, since he is simply an expert?”.  Heraclitus replies as most skeptics do: don’t take my word for it, but look into the world and within yourself and you will find that it is true.

Of all the words yet spoken, none comes quite as far as wisdom, which is the action of the mind beyond all things that may be said.  Wisdom is the oneness of mind that guides and permeates all things.

People need not act and speak as if they were asleep.  The waking have one world in common.  Sleepers meanwhile turn aside, each into a darkness of his own.

Many who have learned from Hesiod the countless names of gods and monsters never understand that night and day are one.

We should not be children of our parents.

Heraclitus does not advocate pessimistic nihilism but continuous pursuit of knowledge and wisdom.  All things change, but this gives us more to know, not less.  It is sad news only if one wants unchanging truths.  Experts who try to separate things from the great flow to know them permanently and in isolation are ignorant of the single unchanging and unified truth: all things are one and all things change constantly.  For Heraclitus, fire is water, day is night, peace is war, and stability is change.  It is good to find the origin of things in their opposites, as this is the last place most would look.

From the strain of binding opposites comes harmony.  The harmony past knowing sounds more deeply than the known.

From tension and strain come harmony, just as the tension in the strings of an instrument allow harmonious and pleasing notes to be played.  We have already heard that satisfaction itself is a form of energy and tension.  The harmony past knowing, the wisdom to see that things are united beyond the distinctions of knowledge and concepts, is more deeply in tune with the universe than partial understandings.

Without injustices, the name of justice would mean what?

The way up is the way back.  The beginning is the end.

As the world works in cycles, we advance to both leave and return from the starting point.  While the starting point is never the same twice, just like a river, to go forward and change is the same as to return and remain what one is.  Some translate the first line here as “The road up is the road down”, which is true of any mountain road: the same road leads both up and down, depending on which way one is facing.

While Heraclitus seems to be an elitist, arguing that only the few are wise and the rest are asleep, he seems to share a similar picture to Confucius in China and earlier Egyptian wisdom proverbs.  While excellent thinking is rare, no one can obtain all wisdom and so one should remember that everyone has some thought and wisdom.  A fragment reads:

Thinking is common to all.

Even so, all human judgements are like child’s toys.  In a passage that sounds very much like Zhuangzi the Daoist patriarch from China, who we will cover next week, using animal perspectives to show that what we value and desire is relative, Heraclitus says:

The language of a grown man, to the cosmic powers, sounds like baby-talk to men.  To a god the wisdom of the wisest man sounds apish.  Beauty in a human face looks apish too.  In everything we have achieved the excellence of apes.  The ape apes find most beautiful looks apish to non-apes.

The sea is both pure and tainted, healthy and good haven to the fish, to humans undrinkable and deadly.  Poultry bathe in dust and ashes, swine in mud.  Donkeys would choose trash over gold.

Two made one are never one.  Arguing the same we disagree.  Singing together we compete.

Dogs bark at everyone they do not know.

The whole is not only a site of conflict, but is also characterized by Heraclitus as playful, like a child playing with its toys, our mortal selves and our perspectives.  Parallel to this, the developmental psychologist Vygotsky, who did work in the 1930s and 40s in Soviet Russia, noticed that children narrate their world out loud to give form to their thoughts and world, and that later this speech splits into vocal speech to others and inner speech to oneself.  Heraclitus asks us to look within, and that the cosmos and our thoughts are given form through speech.


PYRRHO AND SEXTUS EMPIRICUS

Sextus is supposed to have lived sometime around 200 CE, 700 years after Heraclitus.  He is thought by scholars to have been from Alexandria in Egypt.  He might be Libyan, from North Africa, but it has been assumed that he was Greek living in Egypt or Rome.  It is thought that he was a doctor because he mentions medical cases to show how sometimes things are good but then surprisingly bad in other cases or vice versa, just like Heraclitus.

Sextus is the first Pyrrhoian Skeptic, quite similar to the Jains and Buddhists of India.  Agnosticism of all judgment and plurality of perspective and truth are staples for both.  When Alexander fought his way to the border of India, to try to conquer the rich and fertile area, he brought the philosopher Pyrrho with him around 300 BCE.  Pyrrho met with some ‘gymnosophists’ in the historian’s texts, and scholars argue whether these were Buddhists, Jains or if either existed yet in formal groups at the time.  Pyrrho witnessed the yoga and extreme penances of the sages, had discussions, then came home and refused to write anything or live in society.  People would come to visit him on the edges of town, where he would argue that everything is true and not true, that every perspective is true but also false.  His thinking sprouted a school in Alexandria Egypt, a great center of Greek, early Christian and later Muslim thought.  We know of this exclusively through the writings of Sextus.

Sextus calls upon the ‘where there is smoke, there is fire’ example used by Gautama and Aristotle, and then brings up many cases where one would be mistaken to draw the inference.  The point is not that it can’t be drawn, but it can never be certain in a particular situation.