Plato Plato (Greek: Πλάτων, Plátōn, "broad") (428/427 BC[a] – 348/347 BC), was a Classical Greek philosopher, mathematician, writer of philosophical dialogues, and founder of the Academy in Athens, the first institution of higher learning in the Western world. Along with his mentor, Socrates, and his student, Aristotle, Plato helped, in his dialogue The Republic The Republic is a Socratic dialogue by Plato, written c. 380 BC. It is one of the most influential works of philosophy and political theory, and Plato's best known work. In Plato's fictional dialogues the characters of Socrates as well as various Athenians and foreigners discuss the meaning of justice and examine whether the just man is happier Book 6 (509D–513E), has Socrates Socrates was a Classical Greek philosopher. Credited as one of the founders of Western philosophy, he is an enigmatic figure known only through the classical accounts of his students. Plato's dialogues are the most comprehensive accounts of Socrates to survive from antiquity explain the literary device of a divided line to teach basic philosophical ideas about the four levels of existence (especially the intelligible world and the visible world) and the corresponding ways we come to knowledge Knowledge is defined by the Oxford English Dictionary as expertise, and skills acquired by a person through experience or education; the theoretical or practical understanding of a subject, (ii) what is known in a particular field or in total; facts and information or (iii) awareness or familiarity gained by experience of a fact or situation about what exists, or come to mere opinions An opinion is a belief that cannot be proved with evidence. It is a subjective statement and may be the result of an emotion or an interpretation of facts; people may draw opposing opinions from the same facts about what exists.
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Imagine a line divided into two parts
The smaller (segment AC) represents the visible world and the longer part (segment CE) represents the intelligible world. Next, imagine each part of the line divided in the same ratio as the first division. The divisions in the segment for the intelligible world represent higher (DE) and lower (CD) forms. The divisions in the segment for the visible world represent ordinary visible objects (BC) and other representations such as their shadows or reflections The Allegory of the Cave, also commonly known as Myth of the Cave, Metaphor of the Cave, The Cave Analogy, Plato's Cave or the Parable of the Cave, is an allegory used by the Greek philosopher Plato in his work The Republic to illustrate "our nature in its education and want of education". The allegory of the cave is written as a (AB).
It is important to note that the line segments are said to be unequal: the proportions of their lengths is said to represent "their comparative clearness and obscurity" and their comparative "reality Reality, in everyday usage, means "the state of things as they actually exist." Literally, the term denotes what is real; in its widest sense, this includes everything that is, whether or not it is observable or comprehensible. Reality in this sense includes being and sometimes is considered to include nothingness, as well. By contrast, and truth Truth is a commodity and can have a variety of meanings, from the state of being the case, being in accord with a particular fact or reality, being in accord with the body of real things, events, actuality, or fidelity to an original or to a standard. In archaic usage it could be fidelity, constancy or sincerity in action, character, and utterance" as well as whether we have knowledge or instead mere opinion of the objects. It can be readily verified that, for any line divided in the way Socrates prescribes, the two middle sections, BC and CD, are necessarily of the same length.[1] Hence, we are said to have relatively clear knowledge of something that is more real and "true" when we attend to ordinary perceptual objects like rocks and trees; by comparison, if we merely attend to their shadows and reflections, we have relatively obscure opinion of something not quite real.
The first Visible segment represents "clarity and opacity" (Republic, 509e). Because it is so simple to do this, it makes up the smallest chunk. As we move up the line, the beliefs and trust makes up the second part of the Visible section, and respectively makes up the second smallest chunk (take note that it is also the same size as section CD, though). These are the objects that make reflections; the puppets in the cave analogy for example. These things are substantial images and are either natural or artificial.
Socrates uses this familiar relationship, between ordinary objects and their representations or images, in order to illustrate the relationship between the visual world as a whole (visual objects and their images) and the world of forms as a whole. The former is made up of a series of passing, particular reflections of the latter, which is eternal, more real and "true." Moreover, the knowledge that we have of the forms--when indeed we do have it--is of a higher order than knowledge of the mere particulars In philosophy, particulars are concrete entities existing in space and time as opposed to abstractions. There are, however, theories of abstract particulars or tropes. For example, Socrates is a particular . Redness, by contrast, is not a particular, because it is abstract and multiply-instantiated (my bicycle, this apple, and that woman's hair in the perceptual world.
Consider next the difference between the two parts of the intelligible world, represented by segments CD and DE. Plato's discussion of this is apt to seem obscure. The basic idea is that the lower forms (represented by BC) are the real items of which the ordinary particular objects around us are merely reflections or images. The higher forms, by contrast are known only by what has come to be called a priori The terms a priori and a posteriori ("from the latter") are used in philosophy (epistemology) to distinguish two types of knowledge, justifications or arguments. A priori knowledge or justification is independent of experience (for example 'All bachelors are unmarried'); a posteriori knowledge or justification is dependent on experience reasoning, so that strictly speaking, knowledge of them does not depend upon experience of particulars or even on ideas (forms) of perceptually-known particulars.
This can be explained a bit further. In geometry and arithmetic, we often use particular figures to fix our ideas and make demonstrations clear. Moreover, in these sciences, we make certain postulates In traditional logic, an axiom or postulate is a proposition that is not proved or demonstrated but considered to be either self-evident, or subject to necessary decision. Therefore, its truth is taken for granted, and serves as a starting point for deducing and inferring other truths and draw conclusions that are only as trustworthy as the postulates. By contrast, the intelligible is "that which the reason itself," rather than image-assisted imagination, lays hold of by the power of dialectic Dialectic is a method of argument, which has been central to both Eastern and Western philosophy since ancient times. The word "dialectic" originates in Ancient Greece, and was made popular by Plato's Socratic dialogues. Dialectic is rooted in the ordinary practice of a dialogue between two people who hold different ideas and wish to, treating its assumptions not as absolute beginnings but literally as hypotheses A hypothesis is a proposed explanation for an observable phenomenon. The term derives from the Greek, ὑποτιθέναι - hypotithenai meaning "to put under" or "to suppose." For a hypothesis to be put forward as a scientific hypothesis, the scientific method requires that one can test it. Scientists generally base (underpinnings, footings, and springboards, so to speak) to enable it to rise to that which requires no assumption and is the starting point of all, and after attaining that, again taking hold of the first dependencies from it, so as to proceed downward to the conclusion, making no use whatsoever of any object of sense but only of pure ideas moving on through ideas to ideas and ending with ideas. (511b-c)
What all this might mean is essentially to ask, "What are the details of Plato's and Socrates' rationalism In epistemology and in its modern sense, rationalism is "any view appealing to reason as a source of knowledge or justification" . In more technical terms it is a method or a theory "in which the criterion of the truth is not sensory but intellectual and deductive" (Bourke 263). Different degrees of emphasis on this method or?" The reference to "pure ideas," as well as deduction as it were without assumptions (or with one grand assumption or principle, as The Form of the Good is sometimes portrayed), is something reflected again and again in later rationalists. The above text finds later echoes in Descartes René Descartes , (31 March 1596 – 11 February 1650), also known as Renatus Cartesius (Latinized form), was a French philosopher, mathematician, physicist, and writer who spent most of his adult life in the Dutch Republic. He has been dubbed the "Father of Modern Philosophy", and much of subsequent Western philosophy is a response to' interest in pure, a priori deduction and Kant Immanuel Kant (22 April 1724 – 12 February 1804) was an 18th-century German philosopher from the Prussian city of Königsberg. Kant was the last influential philosopher of modern Europe in the classic sequence of the theory of knowledge during the Enlightenment beginning with thinkers John Locke, George Berkeley, and David Hume's transcendental arguments.
Plato, through Socrates, explicitly names four sorts of cognition associated with each level of being:
[A]nswering to these four sections, assume these four affections occurring in the soul--intellection or reasoning (noesis) for the highest, understanding (dianoia) for the second, belief (pistis) for the third, and for the last, picture thinking or conjecture (eikasia)--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. (trans. Shorey 511d-e)
Not too much weight should be put on the English (or Greek) meanings of the words here, however. Any significant meaning that these words have, when used as technical terms for Plato, needs to be informed by the metaphysical Metaphysics is a branch of philosophy that investigates principles of reality transcending those of any particular science. Cosmology and ontology are traditional branches of metaphysics. It is concerned with explaining the fundamental nature of being and the world. Someone who studies metaphysics would be called either a "metaphysician" and epistemological Epistemology or theory of knowledge is the branch of philosophy concerned with the nature and scope (limitations) of knowledge. It addresses the questions: edifice that supports them.
The metaphor of the divided line immediately follows another Platonic metaphor, that of the sun: see Plato's metaphor of the sun Plato, in The Republic , uses the sun as a metaphor for the source of "illumination", arguably intellectual illumination, which he held to be The Form of the Good, which is sometimes interpreted as Plato's notion of God. The metaphor is about the nature of ultimate reality and how we come to know it. Socrates is the speaker of The. It is immediately followed by the famous allegory of the cave The Allegory of the Cave, also commonly known as Myth of the Cave, Metaphor of the Cave, The Cave Analogy, Plato's Cave or the Parable of the Cave, is an allegory used by the Greek philosopher Plato in his work The Republic to illustrate "our nature in its education and want of education". The allegory of the cave is written as a.
Note
- ^ Let the length of AE be equal to and that of AC equal to , where (following Socrates, however, ; insofar as the equality of the lengths of BC and CD is concerned, the latter restriction is of no significance). The length of CE is thus equal to . It follows that the length of BC must be equal to , which is seen to be equal to the length of CD. Quod erat demonstrandum.
External links
- Plato's Analogy of the Divided Line: A read at the Eastern Division Meetings of the American Philosophical Association, December 1988.
See also
Categories: Platonism | Philosophical arguments | Articles containing proofs
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