Thursday, 2 March 2017

Oannes and the Instruction of Mankind

 

The Babylonian writer Berossus (possibly a Greek form of the name Bēl-uşur), took up residence in Athens, after having been a priest of Bel in Babylon in the late 4th century/early 3rd century B.C.E. He wrote a three volume work, Babyloniaka, unfortunately now lost, which was a study on the culture and history of Babylonia. Alexander Polyhistor made an abridgement of this work in the first century B.C.E., also lost. However this abridgement was available to the christian writer Eusebius (4th century C.E), and also Josephus in the first century C.E. The passages which they quoted from Polyhistor and a few other authors survive. As Black and Green write, “Akkadian mythological and historical texts found in modern excavations have largely confirmed the authenticity of the tradition represented by Berossus.”  [1]  This includes the tradition of the Seven Sages, preserved in the account by Berossus (in his first book) of the eight creatures, beginning with Oannes and concuding with Odakon, which emerged from the sea bringing to man the civilising arts, including agriculture. His second book covered the history of Babylonia from the ‘ten kings before the flood’, through the Flood itself.

The Babylonian tradition is indeed that seven apkallu or sages lived before the flood. Their names are given in Neo-Babylonian and Neo-Assyrian ritual texts, as well as the seven cities from which they are supposed to come, though there are differing traditions within Mesopotamia about the sages and their origins which are difficult to reconcile.

Apollodorus has preserved a fragment of Berossus, which tells us that the first of the Chaldean Kings was Alorus of Babylon, followed by Alaparus and also Amelon who came from Pantibiblon, followed by Ammenon the Chaldean. In the reign of Ammenon, the sage Oannes appeared from the sea.  [2]  Polyhistor gives us detail drawn from Berossus about this appearance, after Berossus describes the Babylon of those times as: a great resort of people of various nations, who inhabited Chaldaea, and lived without rule and order like the beast of the field’:

In the first year there made its appearance, from a part of the Erythraean sea which bordered upon Babylonia, an animal endowed with reason, who was called Oannes. (According to the account of Apollodorus) the whole body of the animal was like that of a fish; and had under a fish’s head another head, and also feet below, similar to those of a man, subjoined to the fish’s tail. His voice too, and language, was articulate and human; and a representation of him is preserved even to this day.

The fishtailed images found upon the slabs of Assyrian Palaces and on cylinder seals are representations of this first sage, preserved even until our own much later day. The appearance of Oannes in ritual contexts with the King or the Sacred Tree, or both together, tells us that the earliest days of mankind are being recalled, and that an element of re-enactment or revitalisation is being invoked in these images.

Polyhistor’s account of Berossus’ first book continues:

This Being in the day-time used to converse with men; but took no food at that season; and he gave them an insight into letters and sciences, and every kind of art. He taught them to construct houses, to found temples, to compile laws and explained to them the principles of geometrical knowledge. He made them distinguish the seeds of the earth, and shewed them how to collect fruits; in short, he instructed them in every thing which could tend to soften manners and humanize mankind. From that time, so universal were his instructions, nothing material has been added by way of material improvement. When the sun set it was the custom of this Being to plunge again into the sea, and abide all night in the deep; for he was amphibious.

Creatures which were amphibious were of interest in antiquity because they could inhabit more than one world, as Oannes does here. Not only can he live and breathe under water, and converse with man in the daytime, but he is equipped with what is clearly divine knowledge – the knowledge of writing and of various sciences and arts, house-building, the founding of temples (and implicitly the worship of the gods), law, geometry, botany. The order of the sciences and arts is interesting here, in that house-building comes before the founding of temples, and knowledge of the law comes after the knowledge of the founding of temples. This reflects a conflation of a likely sequence – men will have built houses before they embarked on temples and the development of law and geometry – with a theoretical sequence of the founding of temples and the worship of the gods, the knowledge of whom will have given rise to the knowledge of law and its importance, and the application of the idea of law to the measuring and demarcation of space using the techniques of geometry. The development of botanical knowledge, and the division of the parts of nature, represents the application of the idea of demarcation to the world of plants, as the precursor to agriculture.

The softening of manners is not the thing of principal importance here, but something which is absolutely necessary – it is impossible to have an organised population, subject to reason and the law, able to build houses and temples, and most importantly worship the gods, if they are not free of the daily struggle for survival, in which they are not distinguished in any significant way from the beasts of the field.

The instructions which came from Oannes are described as ‘so universal’, that nothing of any significance ‘has been added by way of material improvement’. These instructions are clearly divine and the product of divine knowledge, and came from the gods by way of the Sage Oannes, who rests in the sea. Recalled here is the shrine of the god Ea/Enki, the ‘broad-eared’ one of wide learning, which is at the bottom of the Apsu, among the sweet waters. The image of the obverse of our world is doubled by associating the return of Oannes to the deep at sunset, where the sun leaves our world in darkness. The human race is illuminated only when Oannes is on land, and conversing with us. It is also of some significance that the point is made that Oannes does not eat ‘at that season’, but receives his sustenance at some other time – implicitly while he is below the waters of the deep, in the place of Ea/Enki, in the Abyss, where all good things which may be had have their ultimate origin.

Polyhistor’s account also tells us that ‘Oannes wrote concerning the generation of mankind; of their different ways of life, and of their civil polity’. Berossus gives the purport of what he said:

There was a time in which there was nothing but darkness and an abyss of waters, wherein resided most hideous beings, which were produced of a two-fold principle. Men appeared with two wings, some with four and with two faces. They had one body but two heads; the one of a man, the other of a woman. They were likewise in their several organs both male and female. Other human figures were to be seen with the legs and horns of goats. Some had horses’ feet; others had the limbs of a horse behind, but before were fashioned like men, resembling hippocentaurs. Bulls likewise bred there with the heads of men; and dogs with fourfold bodies, and the tails of fishes. Also horses with the heads of dogs: men too and other animals, with the heads and bodies of horses and the tails of fishes. In short, there were creatures with the limbs of every species of animals.

Here Berossus describes the properties of the Abyss. It is unilluminated and full of waters which contain beings whose characteristics and properties are not defined by any of the rules which apply on the earth – men have the feet of horses, some have wings, some have two heads, male and female. Bulls have the heads of men, horses have the heads of dogs, etc. These are not ‘seeds of the earth’, but of a realm in which the demarcations and separations in the animal kingdom of the earth are collapsed together and mixed to an infinite degree. In some ways the situation can be paralleled with the disorder in the life of man before the appearance of Oannes from the waters of the sea: the fact that this description follows on immediately from that account suggests this quite strongly. And as the beasts of the field were the precursors of a humanized mankind, so the Abyss is the precursor of another creation, in which order is given to the ‘seeds of the earth’. Berossus says that these creatures, plus ‘fishes, reptiles, serpents, with other wonderful animals…..assumed each other’s shape and countenance’  my emphasis . This is an image of a dynamic chaos, in which everything is intermingled; all possibility is here, and nothing is absolutely separate from anything else.

This is the abyss from which Oannes emerged. And emerging from this, he instructed mankind. This implies some kind of connection between the state of the abyss and the knowledge of the sciences and the arts, and of the nature and worship of the gods. Berossus concludes this passage by saying that ‘Of all these were preserved delineations in the temple of Belus at Babylon’, so there was obviously some constructive point to the contemplation of these composite animals, and the condition and properties of the abyss. Unfortunately this temple was taken to pieces by Alexander during his brief stay in the city, so we cannot look at these images in particular.  [3]  We should not forget that Oannes is himself a composite creature, with the head of a fish and the head of a man, the body and tail of a fish, and the feet of a man – the body and head of a fish mark him as an inhabitant of the sea and the abyss, which is a reflection of his access to the knowledge of the sciences and the arts. He has the voice of a man, and so can communicate with the inhabitants of the earth.

Why should the abyss be accounted the source of knowledge about the sciences and the arts? If the abyss is an approximation, another image of the telos, of the final nature of reality in which all things are contained, and from which all things unfold (even if through the mediation of a copy, a moving image of eternity), then it is all too obvious why the sciences and arts should be associated with the abyss. Ultimately everything which the human race wishes to know and to understand is already present in potential form in the primary reality. Access to it is the question, not whether or not it exists.

This is one of the principal reasons why the teleological perspective on the world has held such a fascination for the powerful and the educated throughout history. The concept of the telos suggests that all things are possible, and that all knowledge is accessible to man, through ritual, through contemplation, and through study. It also suggests that knowledge and understanding can be formalised (a concept with which we are now estranged), so that it is possible to determine the will of the divine, and to arrange the world according to a divine order.

It is also worth pointing out that not only is this understanding that human knowledge is the result of communion with the divine through repeated and enhanced access to the cause of causes, the telos, but the account of the gift of the sciences and the arts which Berossus gives is itself an image which, through the act of its contemplation, amplifies access to the telos.







[1]   ‘Berossus,’ in Black, Jeremy, and Green, Anthony - Gods, Demons and Symbols of Ancient Mesopotamia, British Museum Press, 1992. The text of Berossus can be found collected together in I. P. Cory’s Ancient Fragments, 2nd edition, 1832.
[2] The passage is lexically interesting: Berossus says that in the time of Ammemnon… ‘appeared the Musarus Oannes the Annedotus from the Erythaean sea.’ ‘Musarus’ and ‘Annedotus’ do not appear to be Greek words.
[3] It was Alexander’s intention to rebuild it, but he died before the rebuilding began.

Sunday, 26 February 2017

Being and Representation in Greece and Assyria





This is a discussion of the argument and significance of The Sacred History of Being, published in November 2015. The essential argument of the book is that, in both Greece and Assyria, knowledge was conceived to exist in Being itself, and as a consequence, all true knowledge was knowledge of the Divine. The cultural apparatus of both states can be understood to have been built on that conception. 

***
The argument of The Sacred History of Being is complex and necessarily discursive, since its purpose is to uncover an ancient implex of ideas which was almost always discursively expressed, whether in the course of argument, in the formation of myth, liturgy, or ritual, and was, for the most part, conjured in terms of images. The argument however has a clear focus, which is the consistent reference point of these images - that which does not change - and secondarily the body of ideas which grew up around this notion of a reality which is beyond all merely human understanding.

We know that this idea was pursued in Greece, in particular by Plato, who was 'always looking to the one thing.' This 'one thing' has been very difficult for students of Plato to disinter, since it seemed to be hedged about with logical difficulties which, not least, cast considerable doubt on the possibility of there ever being something which could be referred to as the 'one thing.'

This difficulty isn't simply the result of the coy and often allusive way in which Plato discusses the relationship between the world of change and the world of unchanging reality. It also has something to do with us, and the weight of cultural baggage which we bring to bear on certain questions. We read Plato with many assumptions.

It is also the case that we do not read Plato (or any Greek philosophical writer for that matter) in cultural context. The Platonic canon is about philosophy, and philosophy is currently treated, almost universally, as a subject which can be abstracted from its original context without any significant damage to its meaning or worth. What that original cultural context is, is difficult to determine.
I have attempted to turn this assumption on its head. The Platonic canon belongs very precisely in its cultural context, and we do damage to our capacity to understand both Plato, and the culture to which the canon belongs, by breaking these connections without any grasp of what is lost.

The culture of Greece in the 5th and 4th centuries B.C.E is generally interpreted by classicists in terms of something which happened in isolation from other cultures around the Mediterranean, because it is assumed that the culture of Greece is, in essence, an autocthonous development. The loss this creates for our understanding of all of the cultures of the first millennium B.C.E - including Greece itself - is colossal. Greek intellectual life is relatively well documented when compared with other cultures around the Mediterranean; but rather than using one to illuminate the other, the classicist and philosophical communities assume that they are so far apart, no meaningful comparisons can be made. 

 I have attempted to stand this assumption on its head too, by comparison with aspects of the culture of the Neo-Assyrian empire. Some key details of Greek thought and religious life, which are entirely missing from the record, are documented in Assyria (and in Babylonia) in the mid-1st millennium B.C.E. In writing about the Forms, Plato is, as a key passage indicates to us, also writing about divine statuary and their cultic function. The Forms, as discussed in the canon, reflect a hierarchy which leads to the contemplation of the 'one thing.' This one thing Plato referred to as 'The Good'. This is the ground of Being, or reality itself. All of the Forms participate in some way in Being, and represent aspects of it. Being is conceived by Plato to be the home of real knowledge, and this knowledge can be accessed via the hierarchy of Forms, contemplated in the mind. The Forms represent perfect or ideal approximations to the perfection of Being itself, and provide the access route.

Assyria too possessed the ultimate abstract idea of Being also, some considerable time before Plato wrote about the idea. We know this because of the close relationship which has been established between the structure of the Kabbalah and the Assyrian sacred tree, which is represented many times in royal palaces and on seals. The Assyrians regarded the pursuit of knowledge as an essential component of kingship, which we know about from several sources, including a personal account of the scribal training of Ashurbanipal. The wider training of the king involved the pursuit of excellence in various skills. The king was understood to represent divine Being on earth.

'Looking to one thing' was also essential to the Assyrians, since they too conceived that knowledge resided in transcendent Being, which, they called by many different names. One of the principle images of Being is the undersea Abzu, the home of Ea, the god of wisdom. This is the place where generation is made possible, and where the destinies are determined. Assyrian rituals for inaugurating divine statues invoke the beginning of creation in the Abzu, and feature a long series of images which repeatedly point toward this idea of Being. And in order for a statue to become a living being in heaven, it must be (and is) granted the wide knowledge of Ea himself.

Plato's account of the creation involves the use of an image of Being as a pattern for the generation of the world. This image of Being was used by the Demiourgos to pattern the heavens, with its constellations and moving planets. It is therefore striking that the making of a divine statue in Assyria involves a ritual which exposes the statue to the heavens in order that it may have knowledge of the divine. The parallel Babylonian ritual goes into more detail about the aspects of the heavens which impart divine knowledge to the new god.

In both Assyria and Greece generation is associated with the sea. In both cases the sea is understood as an image of the limit of reality - Okeanos, the encircling ocean in the case of Greece, and the upper and lower sea, in the case of Assyria. It is the limit which is significant, and which gives rise to the image of it. Plato has much to say about the transcendent realm of The Good, in which Forms can have no location, size, shape or colour. The limit appears as the site of generation in Assyrian ritual in the form of the riverbank, which was regarded as the gateway to the Abzu and its threshold. Similarly therefore, in Assyria, generation is understood to emerge from a place which has no location, size, shape or colour. The pure reeds of the riverbank are stated to have their roots in the Abzu.

The precise nature of the cultural relationship between the cult of knowledge in Greece and in Assyria, is currently unclear, apart from the obvious parallels. It will take time and effort to clarify this. But we do know that another important philosophical idea was held in common both in Greece and in Mesopotamia, and we know the nature of the doctrine which emerges from it.  This is the doctrine of wholes or totalities, which we are told was acquired by Pythagoras while he was in Babylon. This doctrine concerns how ideas and forms can participate in one another. It seems like a small thing, outside its proper context. But the doctrine has huge importance in understanding ancient philosophical theology, and indeed in knowing that it existed at all. Anything which is whole, or total in some respect, was understood to participate in wholeness or totality itself. Being was understood in both cultures as a form of totality. In fact in both cultures, it was understood as the entirely transcendent form of totality.

Plato employs this doctrine in his account of the creation, and it is the means by which it is possible for one thing to pass into another, as he tells us. So the creation of wholes and totalities is of key importance. The Forms are wholes, and point to the totality at the root of reality.

It is possible to understand the consequence of the presence of this idea in Mesopotamia, because it is possible, with some teasing out, to understand the consequence of its presence in Greece. Which is that if the ground of Being is transcendent totality, then all other things which possess totality are in some way connected with it, and can be understood as representations of it. This is part of the logical basis for the creation of divine statues. But only part.

The transcendent totality is a plenitude, but it is ungenerated, and so it has no size. It contains the potential for all creation. It is one alone, because otherwise it would be other than it is. And yet Plato speaks of God creating a copy of Being, after which the world was patterned. If a copy of Being was created, then Being would be divided, not whole, and not what it is. It would have been subject to change, which is contrary to its very definition. And yet if it does not exist in the world of change, then it can do nothing. Movement and thought would be impossible. This would be a disastrous state of affairs for any cult which placed knowledge at the heart of Being.

Plato's argumentation about Being is unlike any other from Anselm onwards, in that he identifies Being with the nature of reality itself. Anselm and Descartes speak of supposed properties and attributes of the divine, but since they are attempting proof of the reality of God (framed in terms of some kind of existence), rather than proof of the realness of reality, there is an implicit and unaddressed separation between the divine and the nature of reality in their arguments. There is no sense in either case that the divine is absolutely dependent on the nature of reality.

Plato does not tell us how the paradox of one Being, who is necessarily two for the generation of the world of movement and change, and therefore not real Being, is resolved, nor does he resolve for us the question of whether or not the unchanging divine can be present in the world of movement and change.  What he does do is to proceed with the discussions, on the basis that it is necessarily so, that, somehow, the generated world is patterned after a representation of Being;  and that it must be the case that the divine can, somehow,  be present in the world of movement and change.

If we turn over in our minds the idea that the world is patterned after Being, without its essential nature being compromised, which is totality, alone and undivided, there is only one possible rational logical solution: that the world of movement and change is not, in reality, separated out from the nature of Being. What we see are aspects of Being itself, represented to us in various ways which are available to our capacity to perceive.

Language here does not serve us well, but essentially the logical conclusion must be that, if the essential nature of Being is to retain its integral nature, the world of movement and change is illusory. It has no reality apart from Being. Indeed, there is no such thing as existence 'apart' from Being: Being and the generated world are in some way coterminous.  The world we see and live in is a perception, no more and no less, contained entirely within unchanging Being, and composed of elements and aspects of Being. It is a perceptible world, rather than real; an immensely complex illusion generated within a reality which has no location, extension, shape or colour.

The consequence of this - and this is the crux of the matter - is that though Being retains its essential unchanging nature, and remains always purely is what it is, the generated world must have a double nature. That is, the world of generation is finite, and contains finite things, but it also necessarily contains things which are infinite. These things which relate to the infinite are the completions and perfections, and the other things which participate in the ground of Being. As finitudes, as conceivable images, they belong in the generated world as representations of the divine reality. Considered as representations of Being, they represent what we can understand of the divine, but they must necessarily also be Being itself, and be able to pass in and out of Being. Though we necessarily perceive these images as representations, unless we have profound knowledge of the divine.

It turns out therefore that we can add Plato to the list of ancient philosophers who were addressing reality as a paradoxical phenomenon. That changes quite a lot. It changes our understanding of the Greek mind, and our understanding of Greek culture.

We get some idea of the logic of divine images, their creation and worship, from this perception of reality and the world we live in as a paradoxical matrix. Things necessarily exist in two potential states. Secular and divine. Finite and infinite. Changeable and unchangeable. Sacred and Profane. These two states exist at the same time. It is a matter of understanding, which allows us to know that what belongs to the secular world, is also divine; that what is finite is also infinite; that what is subject to change also belongs to the realm of the unchanging; and that we can find elements of the sacred in the profane.  And, since the world of change is an illusion, so too are living and generated beings.

Formerly I've contrasted reality itself with the world of existence, which is, according to this way of looking at things, not truly real. It is sometimes useful to look at this contrast the other way round, in which the transcendently real world is the only one which has existence. This makes it possible to characterise the world of space and time as one which does not have real existence, only the appearance of existence to us.

However real things and people seem to be in space and time, they come to be and pass away, and do not abide. We think it has real existence of a kind because it has a form of consistency about it, in that physical laws exist and operate in it, and mathematics and geometry apply. This makes it possible to understand it in terms of a form of reality which has the property of objective existence, which is not dependent on mind. Mind observes it, according to this view, but it has existence apart from mind. 

Which brings us to the concept of necessity (anangke), which is key to the understanding of the natural world and the cosmos in Greece. Things which come to be and pass away are subject to it, as well as the objects which move in the heavens. Necessity refers to that force which determines how things behave which are not subject to the operation of the human will. So plants come forth and bloom, human beings are subject to divinely determined fate and destiny, and the planets move inexorably along their paths in the sky. The world of generation is characterised by the presence of necessity: it is a mark of things which have been generated, as opposed to those things which are aspects of unchanging Being.  But this property of the finite is necessarily determined by the infinite, as things which are finite are generated by it. They are patterned accordingly.

Greece shares with Assyria the notion that fate is all powerful, and that the destinies of both men and gods have been decreed at the moment of creation. In both cases however, fate and destiny are decreed by the transcendent divine, for the reason that the world of movement and change is an illusion contained within unchanging Being itself. It necessarily contains within it the start and the finish of all things which may take place in the secular view of reality. And Being determines these, according to its nature.

Maintaining this view of the division between the real world and the world of illusion, it follows that only the properties and attributes of Being are truly real, and truly existent. So, Being itself is real and existent, and its representations are also real, owing to their possession of its properties and attributes (by virtue of the fact that they are wholes and totalities, etc.). According to this view, things which have come to be are patterned after Being itself, and the Forms, which have divine properties as representations of Being.

In assembling lists of things which are pure, which have a common property, or a genealogy of the gods with their properties laid out as epithets which define their perfections and responsibilities, ancient scholars were also listing those things which they understood to be real and to have real existence, and which pointed to the place of creation. By contrast the world of generation contains mainly approximations to those truly real and existent things. These approximations to what is real however can be made perfect by skill, application and the pursuit of divine knowledge, and perfection and divine status can also be accorded to things and individuals by those who already have this knowledge.

By a short extension of this idea, it follows that those beings who live in the generated world have their true existence somewhere else. They are born into existence according to their destiny, and leave at the appointed time. Looked at from this point of view, death can be understood as a return to the place where the essential nature of the individual has its reality.

None of the foregoing implies belief of any sort. All of it may be teased out of the argument Plato makes about the nature of reality. This outlook is best understood as a doctrinal view, based on logical and philosophical discussion. It would have been subject to questions from neophytes and other philosophers; and would have been occasionally refreshed by interaction with those who understood similar doctrines from other places and cultures.

The normative view of religion in Israel for the first half of the first millennium B.C.E is that there was present a form of monotheistic culture and belief, engaged in a struggle with polytheistic ideas within Israel, and with Israel's neighbours in Mesopotamia. In fact we know almost nothing of religion in Israel in that period: there is no solid evidence which can give us reliable information. According to the redacted documents in the Old Testament, dating from the middle years of the  first millennium, it is clear that there was a protracted political struggle taking place for hearts and minds at some point, but most of the objections to polytheism seem to relate to experience of Mesopotamian religious cult and their ideas concerning the gods. Much of this valuable information may therefore post-date the Babylonian exile. 'Thou shall have no other gods before me' might be understood as a purely Israelite sentiment. However, 'I am that which is,' and 'I do not change,' (Malachi) references a philosophical notion of the divine, which we can now see is present in the context of the Mesopotamian divine pantheon.

Parts two and three of The Sacred History of Being were written first, with the umbrella title of 'Being and Representation in Greece and Assyria.' I came to realise in the course of writing that it was important to make it clear that later discussions of the divine in the early modern period were addressing a much more limited set of concepts of the nature of the divine, though these also represented an important subset of discussion of the nature of Being in Greece and Assyria. This early modern discussion represents a significant obstacle in understanding ideas about the divine in the ancient world.
Thomas Yaeger, 9th April 2015.

Thursday, 16 February 2017

Justice and the Harmony of the Soul



Justice is spoken of in Plato's Republic as one of the four
 cardinal virtues; the others being wisdom, courage and 
self discipline (prudence; temperance or moderation in 
older translations) [428e]. Justice however, proves to be
 more difficult to define than the other virtues for the 
participants in the discussion, and they find that its definition 
cannot be approached directly. Therefore they decide to define 
the other virtues first, in the hope that what is left over 
will prove to be justice. 

After the other virtues have been defined, the participants
find that justice remains elusive. Socrates suggests a 
change of approach, and gains the agreement of 
Adeimantus and Glaucon that justice may be characteristic 
of both individuals and communities, and since
 communities are larger than individuals, justice may be 
easier to discern in the context of the polis "We may 
therefore find justice on a larger scale in the
larger entity, and so easier to recognize. I accordingly
 propose that we start our inquiry with the community, 
and then proceed to the individual and see if we can find 
in the conformation of the smaller entity anything similar 
to what we have found in the larger" [Rep. 368e-369a].

Socrates discusses the origin of the state (the polis) and
 argues that it arises out of need, because individuals are not
 self-sufficient. The basic needs are food, shelter and
clothing, and the creation of the polis supplies these needs.
 Such basic needs, he argues, are best met by the individuals
who make up the polis pursuing their own natural 
aptitudes, which are different for each and fit them for 
different jobs[369b-370b]. Hence Socrates argues that 
"we do better toexercise one skill" rather than attempting 
to practice several. Further, the workman must be able to 
function at the right moment for action and thus 
"a professional at the call of his job will not wait till he has 
leisure to spare for it" [370c]. The division of labour within 
the structure of the polis means that both the quality of the 
work done and the quantity produced are greater if 
individuals specialize in this way "on a single job for which 
he is naturally fitted, and neglects all others", whether he 
be a craftsman or a businessman.

Where then is justice in the state? Adeimantus suggests that
it is to be found somewhere in the mutual relationship of the
various elements which make up the state [372a]. The state is
not wise, for example, because of the knowledge of its
 carpenters concerning woodworking and the excellences of that
 craft [428a], no matter how vital the craft may be to life:
this kind of knowledge is too specific in its nature. Socrates
 asks whether there is 

"any form of knowledge to be found among
any of the citizens in the state... which is exercised not on
behalf on any particular interest but on behalf of the city as a whole, 
in such a way to benefit the state both in its
internal and external relations?" [428c] 

The answer is that there is, and it is possessed by the guardians, 
the class of citizens whose special purpose it is to defend the polis
(other men cannot do this and pursue their own natural
 abilities). These men, as citizens, are wise and capable of
being just in the abstract, rather than in the particular.
That is, it is possible for individual souls to be just, as
well as a community. The implication seems to be that they
 have some important feature in common which makes them just;
but what justice is, remains elusive, until Socrates remarks
that:

"our quarry is lurking right under our feet all the time
and we haven't seen it... like people searching for
 something they have in their hands all the time" [432d].

He suggests that it is in fact the requirement laid down at
the beginning of the discussion, that "one man was to do one
job, the job he was naturally most suited for" [433a]; and
that it is the quality left over, after discipline, courage
and wisdom have been identified, which "makes it possible for
them to come into being in our state and preserves them by its
continued presence when they have done so" [433b]. 

He argues that the duty of the ruler is to administer justice, 
and that to do this they will "follow the principle that men 
should not take other people's belongings or be deprived of 
their own... their reason... being that it is ”just" [433e]. 
Injustice is therefore defined as the opposite of the pursuit 
of special excellences, so that someone attempting to move 
from one of the three principal classes in the polis to another, 
say from the class of artisans to the military class, by means of
wealth or physical strength, is attempting to enter a sphere
for which he is unfit; the same is true if the individual
 attempts to pursue several or all functions simultaneously.
 Socrates claims that "this sort of mutual interchange and
interference spells destruction to our state" [434a-b]; and
 describes such a state of affairs as "the worst of evils".

This then, is the soul writ large, and justice, having been
 defined in the state as the mutual relations of its various
elements, each pursuing its own special exellence and
 occupying its particular place within the social structure,
 must, if the individual is to be just, involve a similar
structure and set of relationships within the soul. 

Thus Socrates argues that there are three principal aspects of the
soul: the Reason, the Spirit, and the Appetite, corresponding
respectively to the three principal classes in the state,
 which are: the Guardians, the military class, and the class of
artisans and businessmen. Thus the whole structure of the state 
is tied in closely with the ‘Myth of the Cave’ and the ‘Simile
 of the Sun’, as well as the matter of the ‘Divided Line’, 
discussed later in the Republic

The first and third of these correspondences are fairly easy to 
understand, but the middle of the three is a different and difficult 
matter, and Plato himself is unclear about it, though he warns us 
that his method is not to be regarded as precise  Each of these
 aspects of the soul must follow its own interests, like the
various classes within the state. Justice is concerned,

"not with external actions, but with a man's inward self,
 his true concern and interest. The just man will not
allow the three elements... to trespass on each other's
 functions or interfere with each other, but, by keeping
all three in tune, like the notes of a scale... will in
the truest sense set his house to rights, attain self-mastery 
and order, and live on good terms with himself" [443c-e].

The just individual has become one instead of many and "will
be ready for action of any kind (recalling the workman
 pursuing his special excellence)... and will call the
knowledge which controls such action wisdom."  Injustice is
action which destroys this disposition and capacity, and 
opinions, as opposed to knowledge and wisdom, which 
control such action, are defined as ignorance [443e]:

"Injustice is a kind of civil war between these… three elements... when
the elements of the mind are confused and displaced... [this] 
constitutes injustice, indiscipline, cowardice,
ignorance, and, in short, wickedness of all kinds" [444b-c].

The relations of the parts of the soul, whether harmonious or
inharmonious, is further compared with the physical health of 
the body: health being defined as being produced by  
establishing a natural relation of control and subordination
among the constituents of the body, whereas disease is 
produced through the establishment of anun-natural 
relation [444d].

The question remains to be asked: if all these elements 
are to be bound together in harmony, how is this achieved
 by letting each constituent of the soul or state pursue its 
own special xcellence, its function?

 It seems to us a very laissez faire
arrangement, and clearly the polis is some kind of entity
beyond the mere assemblage of its parts. It would not do, for
example, for the entire body of the citizenry to consist of
 carpenters, no matter how great their skills, no matter how
 excellent their designs. Likewise, a polis full of Guardians
would have difficulty in supplying the needs of the citizenry
in respect of food, clothing and shelter. Clearly Plato
 assumes that a proper order, a proportionate order of the
classes of the citizens, is natural. I.e., that it is in the
nature of reality for separate things to be joined together in
 a proportionate way. It would seem that the way this
harmonious arrangement arises is by each of the elements of
 the whole pursuing its own special excellence, but it is not
 altogether obvious why this should work out properly.

The reason for the difficulty here is that we look at things
 upside down with respect to the Greek perception of reality.
 Assuming (as we tend to do) that reality is an aggregation of
elements which add up to make substance and action, we cannot
 easily understand how it is that order has a natural place 
in the resulting arrangements. But the Greeks thought (with the
exception of materialists like Democritus) teleologically, so
 that the universe (in toto) was thought of as complete and
 perfect in itself. 

What we encounter in our experience is this complete and 
perfect totality unwound and disassembled to
 various degrees, so that things are not present in the proper
 proportions and order. However, if things are brought to their
proper ends, to their own perfection and completion, then, on
the basis of the analogy with the cosmos at large, all the parts
 of that individual entity, that particular whole, must
be present in a proper and harmonious order (which echoes the
 character of the argument about the nature of the soul on the
basis of the larger entity of the polis). 

Thus it is that the pursuit of special excellences by individuals, 
in terms of skills, and moral and intellectual virtue,
without reference to the activities of other individuals, was 
understood to  result in such a harmonious arrangement. 
They are joined together as a consequence of the fact that each 
of the virtues is complete and perfected,  and thus each 
participates in the completion and perfection of, the individual, 
the polis, and ultimately the cosmos itself.*1 

*1 See Timaeus 31c-32c.

References:

Plato: The Republic (penguin edn. transl. and introduction by
 Desmond Lee)
Plato: The Timaeus (penguin edn. transl. and introduction by
 Desmond Lee)
Onians, R.B:  The Origins of European Thought