PLATO'S DISCUSSION OF KNOWLEDGE IN
THE THEAETETUS AND THE REPUBLIC
|
| Jud Evans |
"What again shall we say of the actual
acquisition of knowledge?--is the body, if
invited to share in the inquiry, a hinderer
or a helper? I mean to say, have sight and
hearing any truth in them? Are they not,
as the poets are always telling us, inaccurate
witnesses? and yet, if even they are inaccurate
and indistinct, what is to be said of the
other senses?--for you will allow that they
are the best of them?"
"For in attempting to consider anything
in company with the body she is obviously
deceived."
Plato, Phaedo
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INTRODUCTION
Before contrasting certain elements of the
THEAETETUS AND THE REPUBLIC I will first
examine Socrates' maieutic methodology (his
midwife analogy) and then consider the question
of Plato's Forms. The essay will then turn
to the main fact-finding focus of this paper,
which is to provide a contrastive account
of the different approaches to knowledge
in the two dialogues by identifying similarities
and variations of approach.
THE MAIEUTIC METHOD Theaetetus seeks to arrive
at the truth by way of logical arguments.
Plato, the amanuensis turned ghostwriter for the executed
Socrates, intends that the context be understood
in the light of Socrates' mission to educate
his fellow citizens. Socrates' discussion
with the brilliant geometrician and mathematician
Theaetetus whom he likes and respects, is
a joint examination of the subject matter
of 'knowledge,' which lacks the cross-examinational
extremes of the elenchtic method by good-naturedly
getting his conversational partner to re-examine
the entailments of his uncritically held
beliefs, to see if they were abortive or
viable in the sense that a healthy foetus
is determined to be viable.
'Socrates himself describes it as the art
of delivering the mind of a universal idea
(maieutikê technê.) [1] (De Wulf. 1909. p.
15.)
I employ the word 'abortive' deliberately,
for the essential qualities or characteristics
of Plato's maieutic science of the dialectic
carry an allusion to the outcomes of human
parturition. Plato believed that the human
soul possesses realised knowledge from previous
lives, which could be brought out and elucidated
via dialectic.
He referred to his role as that of: maieutic
psychagogy from the Greek: maieutic: maieûtikos,
midwife, and psychagogy: psûchê, soul, and
agogê, to transport or lead out of, and referred
to his ability to help or bring out (give
birth to) new ideas, from a person's soul,
or to transmit to a person's psyche an understanding
of a higher level of being. Cornford. (Theaet.
148b - e.)
PLATONIC FORMS
See: some Platonic Forms here:
http://evans-experientialism.freewebspace.com/platonicclouds.htm
For Plato a form exists for each matching
type of object in the cosmos. This curious
ancient belief meant that there exist forms
for human beings, trees, pork pies, water
hydrants, boats, apples, colours, beauty,
piety, goodness and knowledge. The Form of
the Good equals God, and the location where
souls come into existence and Forms exist
is in a 'Platonic heaven' - a spiritual dimension
where the souls of the dead experience a
renewed conjugation with the forms. Particulars
are objects that are involved in a Form,
which provides the requisite existential
condition for a particular to exist, and
compose the potentiality of things. There
is an important criticism of the Forms first
offered by Plato in his dialogue Parmenides.
Cornford. (Parm. 132b-136c.) It is called
the Third Man Argument and states that if
we take an assemblage of things with a mutual
feature such as knowledge and place them
under the characteristic knowledge then knowledge
itself can be said to contain the knowledge
characteristic, so it can be committed to
the archetype set as well. The set must be
classified under another form, a second knowledge
- for example: KNOWLEDGE SET (B.) which also
contains the characteristic of knowledge,
so it may be placed in a set as well as KNOWLEDGE
SET (C) etc.
Gregory Vlastos, twentieth century Socratic
scholar commented:
'Plato explains systematically what Socrates
never tried to do at all: 'how' Forms are
real - what sort of reality they have.' [2]
(Vlastos. 1991.) p. 66)
Vlastos also pointed out that when Aristotle
came across dialogues, which asserted the
existence of abstractions like 'justice,
piety, beauty and the rest, he understands
Socrates to be talking about 'universals'
'For that is called 'universal' whose nature
it is to belong to a number of things.' [3]
(Ibid. 1991) p. 93.)
THE THEAETETUS - THE DIALOGUE The Theaetetus
is aporetic - it is a dialogue that ends
in an insoluble contradiction or paradox
of meanings, though the development of the
dialectic is both fascinating and highly
educative epistemologically.
Unlike the parabalistic approach he used
is The Cave, and the diagrammatically analytical
approach of The Divided Line in The Republic,
Socrates initiates a dialectic discussion
proper by asking the salient question:
'I cannot make out to my own satisfaction
what knowledge is? Can we answer that question?'
Cornford. (Theaet. 146.)
Theaetetus offers a list of the sciences
and points to the art of the cobbler and
other craftsmen claiming that these are knowledge.
Predictably Socrates protests that individual
examples are insufficient:
'But the question you were asked Theaetetus,
was not what are the objects of knowledge…but
to find out what the thing itself - knowledge
- is? [Ibid. 146e.]
The discussion goes on to evaluate three
separate epistemological accounts of knowledge
furnished by his interlocutor: (a) Knowledge
is perception; (b) Knowledge is true belief,
and (c) Knowledge is justified true belief.
They are all eventually ruled out, and no
successful replacement is provided. What
we do witness in this verbal interplay is
the Platonic intromission of the Form as
aspatial and atemporal for every corresponding
type of object in reality and a rigorous
examination of the appropriate domain of
sensation and ideation.
(A) KNOWLEDGE IS PERCEPTION.
Theaetetus then introduces his first idea
- that 'Knowledge is perception. 'Now as
far as I can see at present, knowledge is
perception.' (Ibid. 151e)
Socrates parries this suggestion by employing
another allusion to midwifery and claims
that it refers to the theories of Protagoras
and it should be compared with them in order
to see:
'Whether it is a true birth or a mere wind-egg?'
(Ibid. 151e.)
The pre-Socratic thinker Protagoras coined
the famous dictum:
'Man is the measure of all things,' [4] Protagoras.
Fragment 1 (DK80b1)
Protagoras contended that if one man claims:
'it is hot' and the man is not lying, then
the statement is true for that person. If
a second and third truthful person claims
it is mild, or it is cold, then those statements
could also be true for them. The dictum matches
up with the old adage; 'Beauty is in the
eye of the beholder.'
Socrates rejects Theaetetus' suggested definition
of 'perception as knowledge' and concludes
that it relegates the contextual definition
to a doctrine which rules out a concise explanation
of the meaning of the word 'knowledge,' for
all criteria of judgment are relative to
the individuals and situations involved.
(B) KNOWLEDGE IS TRUE BELIEF.' Theaetetus
then postulates 'Knowledge is true belief,'
but Socrates swiftly discounts the idea with
the observation that orators and lawyers
are skilled in persuading people to believe
anything of which they were not even eyewitnesses.
True belief in those circumstances therefore
is a belief in something, which might prove
consistent with fact or might not just by
mere luck. (Cornford. Theaet. 201a - d.)
THE DREAM
(c) KNOWLEDGE IS TRUE JUDGMENT ACCOMPANIED
BY LOGOS.
Stimulated by Theaetetus' next suggestion
that knowledge is true judgment accompanied
by Logos (an account) adding that only that
which has Logos can be known. Socrates develops
his argument by way of 'The Dream' into a
convoluted theory of knowledge. He posits
two kinds of existents and claims that Complexes
being a conceptual whole made up of related
simples. Such Complexes presuppose a Logos
that analyses and maps them into their simple
components. The simples however cannot be
known. Thus a knowledge of a Complex means
a 'true belief' in accord with an account
(logos) that cannot analyse and map to the
simplest constituents of entities which are
unknowable which means that any object, which
is the sum of these parts, cannot be known
either. (Ibid. 202e) Socrates uses the example
of letters and syllables. The first syllables
of Socrates' name comprise of the letters
- 'S and O' - but one cannot give a similar
Logos [account] of the syllable's elements,
since they are mere vocus flatus. Thus no
knowledge is possible. Ibid. 203a - 204a)
We are entitled to ask why Socrates claims
that these simple elements of perception,
the characters of the alphabet and the names
belonging to them used are without logos,
indescribable and unknowable? Both letters
are in my view perfectly knowable as to their
history, development, shape, pronunciation,
phonetic meaning and a wealth of explanation
can be provided about them. By way of illustration,
the eighteenth letter of the Greek alphabet,
the sibilant apical or laminal alveolar 'S'
( S - sigma) is pronounced 'S' as in sister
- but 'Z' as in zoo before beta, gamma, delta,
and mu, etc. Much time could be spent talking
about these letters, and linguists and schoolteachers
certainly do.
As Meyerhoff points out in his: 'Socrates'
Dream in the Theaetetus,'
'This relevance, however, is not shown in
the statement or in the subsequent criticism
of the dream. On the contrary, both exposition
and criticism seem to take these characteristics
fur granted; or, more precisely, the statement
of the 'dream' justifies this basic assumption
in language so condensed and oblique that
the reasons for it are not easily apparent.
[5] (Meyerhoff 1958. P. 132.)
Thus the definition of knowledge as "true
judgment plus Logos" cannot be sustained
either. Theaetetus has nothing else to say,
and the dialogue ends inconclusively. Theaetetus
acknowledges that thanks to Socrates he has
already given utterance to more than he had
in him. To which Socrates good-naturedly
concludes:
'All of which our midwife's skill pronounces
to be mere wind eggs and not worth the rearing?'
(Ibid. 210b)
THE REPUBLIC
The 'traditional' analysis of knowledge In
the Theaetetus was deeply influenced, by
Plato's proposal that knowledge is true belief
with an account or logos. We now turn to
the Republic, where he conducts an epistemological
evaluation of his varying levels of knowledge-acquisition
- Imagining, Belief, Thinking, and Perfect
Intelligence in the service of the attainability
of the Good with the personal and public
ethical values it entails. He expresses this
theory with three approaches and provides
us with an account through interconnected
metaphors that exploit a similarity between
experiences as experienced in the different
sense modalities of The Cave and the more
cerebral, rationalistic methodology of the
Divided Line and his belief in The Forms.
In the Republic Socrates links his discussion
of knowledge with personal justice in relation
to citizenship and how a just person should
conduct himself and how knowledge can regulate
how the good can prevail in the city states
of Greece. For Nietzsche Socrates saw through
the noble Athenians…the same kind of degeneration
was quietly developing everywhere: old Athens
was coming to an end.
'Everywhere the instincts were in anarchy,
everywhere one was within sight of excess:
monstrum in animo was the common danger.'
[6] (Nietzsche 1895. l-9)
THE DIVIDED LINE
In a famous paragraph Socrates outlines the
graphical format of his epistemological device:
'Represent them then, as it were, by a line
divided into two unequal sections and cut
each section again in the same ratio-the
section that is, of the visible and that
of the intelligible order-and as an expression
of the ratio of their comparative clearness
and obscurity you will have, as one of the
sections of the visible world, images. By
images I mean, first, shadows, and then reflections
in water and on surfaces of dense, smooth,
and bright texture, and everything of that
kind, if you apprehend.'
Cornford. [Rep. 509d]
The levels of knowledge delineated so imaginatively
and dramatically in the Cave are thus approached
less emotionally and more schematically and
diagrammatically in The Divided Line, where
imagining, as in the Cave, is at the most
inferior level of this developmental scaling
ladder of the states of his four stages in
the acquisition of knowledge in pursuit of
the Good: appearance, belief, thinking, and
perfect intelligence.
Not unexpectedly, as in the Cave, the Sun
is also employed by Socrates in the Divided
Line as a metaphor for The Good:
' The sun, I presume you will say, not only
furnishes to visibles the power of visibility,
but it also provides for their generation
and growth and nurture though it is not itself
generation. Of course not. In like manner,
then, you are to say that the objects of
knowledge not only receive from the presence
of the good; their being known, but their
very existence and essence is derived to
them from it, the good itself is not essence
but still transcends essence in dignity and
surpassing power.'
Cornford. (Rep. 509b)
The Forms are designated the highest levels
of 'reality' Plato summarises the schemata
of the epistemological division for his interlocutor
Glaucon thus:
'And now, answering to these four sections,
assume these four affections occurring in
the soul-intellection or reason for the highest,
understanding for second, belief for the
third, and for the last, picture thinking
or conjecture-and arrange them in a proportion,
considering that they participate in clearness
and precision in the same degree as their
objects partake of truth and reality.
'(Ibid. 511. d.]
'I understand, he said. I concur and arrange
them as you bid.'
For Plato then, the 'real world' is not what
we see but what we understand or feel in
an 'intelligible world' because it is made
up of eternal Forms. The thinker believed
there are three ways to discover Forms: recollection,
dialectic and desire. Recollection is when
our souls remember the Forms from prior existence.
Dialectic is when people discuss and explore
the Forms together. And third is the desire
for knowledge.
THE CAVE
In Plato's compelling vignette of the Cave
[ibid. 514] we are presented with a vision
of manacled captives invested in a dark grotto
into which no sunlight ever penetrates, facing
a wall and pinioned by their necks in such
a manner that they can only look forward
at the wall upon which shadows of the shapes
of objects or men are paraded on an elevated
causeway in front of an unseen fire behind
them which projects the shadows upon its
surface. For the shackled men the indistinct
shapes perceived by the visual senses are
appearances that form their version of "true
reality.'
 |
| The seated prisoners [left] observe the shapes
projected by the firelight upon the cave
wall |
The seated prisoners [left] observe the shapes
projected by the firelight upon the cave
wall
The allegory of the imprisonment in the murky
depths of the Cave indicates that humanity
lives in epistemological and sensorial ignorance.
Later in the apologue a man is released and
the results of his ascent to the shining
brightness of the sun compared with his former
ignorant fettered existence in the dark below.
For Socrates deliverance from the unknowingness
of the appearance of merely sensible objects
and the ultimate achieval of the individual
and public benefits for society necessitates
an acknowledgement of the Forms of Knowledge,
Justice and the Good provide. Knowledge can
only be attained via an ascent to the brightness
of the Good, (of which the sun is a metaphor.)
When eventually a man is unshackled and is
enabled to turn his head and see the real
objects which for so long have been paraded
behind him, he is at first be unable to comprehend
them as being the embodiments of the indistinct
shadows and shapes on the wall. Finally he
is freed from below ground and staggers to
the surface rubbing his eyes against the
bright light of the sun which has:
'The power of elevating the highest principle
in the soul to the contemplation of that
which is best in existence,' [ibid. 517b.]
Hence will the released prisoner from ignorance
gain eventual sight of the upper world of
knowledgeable reality.
And first he will see the shadows best, next
the reflections of men and other objects
in the water, and then the objects themselves;
then he will gaze upon the light of the moon
and the stars and the spangled heaven [516b]
and then he will see the sky and the stars
by night better than the sun or the light
of the sun by day?'
Thus does Socrates in this cleverly created
allegory reveal the point of the allegory,
for we are being asked to assume that the
ascent and the contemplation is the soul's
ascent to the intelligible region
Hence the allegory depicts the need for mankind
to aspire to and reach the form of knowledge,
without which they will be forever unable
to make the correct ethical and political
and ethical decisions. All other forms of
knowledge will be useless - without the key
to life - 'highest form of knowledge' - the
form of the Good.
For a completely different interpretation
of this rather naive account see my:
PLATO'S CAVE THE BIGGEST CON-TRICK IN PHILOSOPHY?
http://evans-experientialism.freewebspace.com/evans_cave.htm
and
PLATO'S CAVE REVISITED
http://evans-experientialism.freewebspace.com/evans_cave_revisited.htm
CONCLUSION
The unsuccessful Socratic midwifery of the
Theaetetus failed to deliver a healthy gnosiology
for a young Theaetetus, pregnant, but sadly
barren of such a theory of knowledge.
It is however fruitful to compare Socrates'
brilliant dialectical approach in The Theaetetus,
including his painstaking unpicking of every
proposition put forward by his interlocutor,
with the more successful and less wordy allegorical
approach of The Cave and the equally successful
analysis of knowledge into its elemental
parts or basic principles in The Divided
Line.
The most obvious difference is that the quest
for the meaning of knowledge in The Republic
works, as far as his particular message goes,
while The Theaetetus, in spite of being an
intriguing historical document - does not
- for it ends in aporia.
Thomas Aquinas said of Plato in his great
Summa Theologiae:
'Plato held that the forms of corporeal matter
are derived from, and formed by, forms immaterially
subsisting, by a kind of participation. Thus
he held that there exists an immaterial man,
and an immaterial horse, and so forth.'
He further reminds us:
'Thus Aristotle rejects the opinion of Plato,
who held that ideas existed of themselves,
and not in the intellect’
And adds that: 'This opinion appears to be
unreasonable in affirming separate ideas
of natural things as subsisting of themselves.'
[7] (Thom. Aquinas. I, q. 84, a. 1. c.)
Socrates' theory of knowledge is so 'Form-Dependant'
and is utterly predicated upon Plato's theory
of forms. There much opposition to these
curious ideas of the existence of forms,
and the concept is very much out of favour
with most modern philosophers.
My own view? As an eliminative determinist
I am totally out of sympathy with all of
Plato's and Socrates‘ transcendentalist ideas,
abstract verbiage and reified nomenclature.
If asked to provide ‘evidence’ for exactly
why I have no disproof to back up this rejection,
then the answer is – I cannot provide any.
If such a philosopher claims that there exists
a realm which contains mysterious ‘forms,’
which float around as templates for worldly
objects, or reificational definitional models
of human activity, or existential modalities,
such as ‘beauty’ or ‘piety’ or ‘knowledge,’
or we have regurgitative ‘know how’ that
we bring with us from ‘previous lives,’ then
I cannot produce evidence to the contrary
– and nobody can.
As a nominalisnt and eliminativist for me
‘ Knowledge’ does not exist – only ‘knowing
humans’ can be found in the world - If anyone
can prove otherwise – let them try.
From a modern ontological, mereological and
scientific point of view Plato's notions
of ‘complexes’ and ‘simples’ are without
foundation, though approached as social documents,
or as a History of Philosophy, ‘The Theaetetus’
and ‘The Republic’ are very interesting and
worth reading.
Kant accuses Plato of creating these "perceptions"
out of thin air, mere subjective feeling.
Plato's effort involves, claims Kant, a "mystical
illumination," which brands him as having
fallen into Schwarmerei (the enthusiasm of
visionary charlatans) that is "the death
of all philosophy." Thus for Kant, Plato
is the charlatan par excellence--nothing
more. [8] Livergood. 2006]
As a historiography The Cave continues to
work for me as a brilliant literary allegory
of Plato as ‘historical man’ exalted in his
desire to improve the understanding of his
fellows and establish fitting ethical touchstones
of what is good and what is bad, by testing
them against assiduously crafted, personally
bench-tested epistemological criteria with
which to improve their own extraordinarily
fecund and innovative society.
In these dark days of international ignorance
of 'the other' and as the heirs of the phenomenological
inheritance, which Socrates, Plato and the
like have handed down to us, we too continue
our torturously slow moral progress from
the darkness of the Cave towards the sunlight
of knowledge.
We are tardy in our scaling of the upward
inclines of knowledge. Unchained, we struggle
slowly towards the surface brightness and
a new world of understanding and justice
under the bright sun - but instead discover
a world of charred cities illuminated by
the incandescent light of burning tower blocks.
Is our climb in vain - have we left it too
late?
REFERENCES
Note: All textual references to The Theaetetus, The Republic and The Parmenides used in this essay are Stephanus page numbers
and refer to: Plato. 'Plato - The Collected Dialogues.' translator. F. M. Cornford. Hamilton.
E.-Cairns. H. ed. 2005. Bollington Series.
LXXI. Princeton University Press.
[1] De Wulf. Maurice. 'History of Medieval Philosophy.' p. 15. Longmans, Green, and Co.
39 Paternoster Row, London 1909.
[2] Vlastos. Gregory. 'Socrates. Ironist and Moral Philosopher.' 1991) p. 93. Cambridge University Press.
Cambridge.
[3] Ibid 1991) p. 93.
[4] Protagoras. 'Perseus Encyclopedia.' http://www.perseus.tufts.edu/cgi-bin/ptext?
doc=Perseus%3Atext%3A1999.04.0004%3Aid%3Dprotagoras-of-abdera.
Accessed: 7 November 2006.
[5] Meyerhoff, H.: 'Socrates' dream in the Theaetetus,' in: Classical Quarterly 8 (1958), p. 132.
[6] Nietzsche. F. 'The Problem of Socrates.' l. 9. from: 'Die Götzen-Dämmerung' [1895]
Twilight of the Idols http://www.handprint.com/SC/NIE/GotDamer.html
accessed 30.10.20
[7] Aquinas. Thomas. http://www2.nd.edu/Departments//Maritain/etext/homp015.htm
[accessed 31 October. 2006.]
[8] Livergood. Norman D. Plato's Contemporary Relevance. 2006. http://www.hermes-press.com/plato_index.htm
Accessed 28.11.2006
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