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Diairesis
Diairesis (, "division") is a form of classification used in ancient (especially Platonic) logic that serves to systematize concepts and come to definitions. When defining a concept using diairesis, one starts with a broad concept, then divides this into two or more specific sub-concepts, and this procedure is repeated until a definition of the desired concept is reached. Aristotle makes extensive use of diaresis in categorization as basis for syllogizing. He makes clear, however, that definition by diaresis does not in itself prove anything. Apart from this definition, the procedure also results in a taxonomy of other concepts, ordered according to a general–specific relation. The founder of diairesis as a method was Plato. Later ancient logicians (including Aristotle) and practitioners of other ancient sciences have employed diairetic modes of classification, e.g., to classify plants in ancient biology. Plato's method of definition Diairesis is Plato's later method of ...
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Sophist (dialogue)
The ''Sophist'' (; Henri Estienne (ed.), ''Platonis opera quae extant omnia'', Vol. 1, 1578p. 217) is a Platonic dialogue from the philosopher's late period, most likely written in 360 BC. In it the interlocutors, led by Eleatic Stranger employ the method of division in order to classify and define the sophist and describe his essential attributes and differentia vis a vis the philosopher and statesman. Like its sequel, the '' Statesman'', the dialogue is unusual in that Socrates is present but plays only a minor role. Instead, the Eleatic Stranger takes the lead in the discussion. Because Socrates is silent, it is difficult to attribute the views put forward by the Eleatic Stranger to Plato, beyond the difficulty inherent in taking any character to be an author's "mouthpiece". Background The main objective of the dialogue is to identify what a sophist is and how a sophist differs from a philosopher and statesman. Because each seems distinguished by a particular form of knowl ...
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Philebus
The ''Philebus'' (Φίληβος, ''Phílēbos'') is a work by the ancient Greek philosopher Plato, written in dialogue form. It presents a fictional conversation between Plato's teacher Socrates and two young Athenians, Philebus and Protarchus. The main topic is the ethical evaluation of pleasure. Philebus and Protarchus are hedonists; they consider pleasure as the highest good and equate it with the absolute Good. Socrates represents the opposing view, prioritizing reason and insight. While he does not dispute the legitimacy and value of pleasure, he points out the diversity of pleasures and argues for a more nuanced assessment. He rejects some forms of pleasure as harmful and assigns a subordinate rank in the hierarchical value order to the remaining "pure" pleasures. The distinction between types of pleasure leads to general considerations about the unity and plurality of types that are subsumed under a generic term, and about the categories into which all being can be di ...
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Statesman (dialogue)
The ''Statesman'' (, ''Politikós''; Latin: ''Politicus''), also known by its Latin title, ''Politicus'', is a Socratic dialogue written by Plato. The text depicts a conversation among Socrates, the mathematician Theodorus, another person named Socrates (referred to as "Socrates the Younger"), and an unnamed philosopher from Elea referred to as "the Stranger" (, ''xénos''). It is ostensibly an attempt to arrive at a definition of "statesman," as opposed to "sophist" or "philosopher" and is presented as following the action of the ''Sophist''. The ''Sophist'' had begun with the question of whether the sophist, statesman, and philosopher were one or three, leading the Eleatic Stranger to argue that they were three but that this could only be ascertained through full accounts of each (''Sophist'' 217b). But though Plato has his characters give accounts of the sophist and statesman in their respective dialogues, it is most likely that he never wrote a dialogue about the philos ...
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Plato
Plato ( ; Greek language, Greek: , ; born  BC, died 348/347 BC) was an ancient Greek philosopher of the Classical Greece, Classical period who is considered a foundational thinker in Western philosophy and an innovator of the written dialogue and dialectic forms. He influenced all the major areas of theoretical philosophy and practical philosophy, and was the founder of the Platonic Academy, a philosophical school in History of Athens, Athens where Plato taught the doctrines that would later become known as Platonism. Plato's most famous contribution is the theory of forms, theory of forms (or ideas), which aims to solve what is now known as the problem of universals. He was influenced by the pre-Socratic thinkers Pythagoras, Heraclitus, and Parmenides, although much of what is known about them is derived from Plato himself. Along with his teacher Socrates, and his student Aristotle, Plato is a central figure in the history of Western philosophy. Plato's complete ...
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Phaedrus (Plato)
The ''Phaedrus'' (; ), written by Plato, is a dialogue between Socrates and Phaedrus, an interlocutor in several dialogues. The ''Phaedrus'' was presumably composed around 370 BC, about the same time as Plato's ''Republic'' and ''Symposium''. Although ostensibly about the topic of love, the discussion in the dialogue revolves around the art of rhetoric and how it should be practiced, and dwells on subjects as diverse as metempsychosis (the Greek tradition of reincarnation) and erotic love, and the nature of the human soul shown in the famous chariot allegory. Setting Socrates runs into Phaedrus on the outskirts of Athens. Phaedrus has just come from the home of Epicrates of Athens, where Lysias, son of Cephalus, has given a speech on love. Socrates, stating that he is "sick with passion for hearing speeches", walks into the countryside with Phaedrus. Socrates is hoping that Phaedrus will repeat the speech. They sit by a stream under a plane tree and a chaste tree, and the r ...
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Categorization
Classification is the activity of assigning objects to some pre-existing classes or categories. This is distinct from the task of establishing the classes themselves (for example through cluster analysis). Examples include diagnostic tests, identifying spam emails and deciding whether to give someone a driving license. As well as 'category', synonyms or near-synonyms for 'class' include 'type', 'species', 'order', 'concept', 'taxon', 'group', 'identification' and 'division'. The meaning of the word 'classification' (and its synonyms) may take on one of several related meanings. It may encompass both classification and the creation of classes, as for example in 'the task of categorizing pages in Wikipedia'; this overall activity is listed under taxonomy. It may refer exclusively to the underlying scheme of classes (which otherwise may be called a taxonomy). Or it may refer to the label given to an object by the classifier. Classification is a part of many different kinds of acti ...
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John Lloyd Ackrill
John Lloyd Ackrill, (30 December 1921 – 30 November 2007) was an English philosopher and classicist who specialized in Ancient Greek philosophy, especially the philosophy of Plato and Aristotle. Ackrill has been said to be, along with Gregory Vlastos and G. E. L. Owen, "one of the most important figures responsible for the upsurge of interest in ancient Greek philosophy among Anglo-American philosophers of the second half of this century". Biography Ackrill was born, to Frederick William Ackrill and Jessie Anne Ackril, in Reading, Berkshire where he attended Reading School. In 1940 he entered St. John's College, Oxford as a scholar in Classics where his philosophy tutors were Paul Grice and John Mabbott. The next year he left for war service in the Royal Berkshire Regiment and General Staff, reaching the rank of captain. He returned to Oxford in 1945 to read Literae Humaniores (or 'Greats', a combination of philosophy and ancient history), graduating in 1948. He then ac ...
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Hans Herter
Hans Herter (8 June 1899 – 7 November 1984) was a German Classical philologist who was for many years Director of the Rheinischen Museum für Philologie, Bonn. His main interests lay in the works of Thucydides and Plato Plato ( ; Greek language, Greek: , ; born  BC, died 348/347 BC) was an ancient Greek philosopher of the Classical Greece, Classical period who is considered a foundational thinker in Western philosophy and an innovator of the writte .... Among his prominent students is Heinz-Günther Nesselrath. References Sources *Rainer Lengeler, Ernst Vogt and Heinz Gerd Ingenkamp, eds. ''In memoriam Hans Herter. Reden gehalten am 3. Mai 1985 bei der Gedenkfeier der Philosophischen Fakultät der Rheinischen Friedrich-Wilhelms-Universität Bonn'', Bonn 1986. * Carl Werner Müller. "Nachruf auf Hans Herter", in: ''Rheinisches Museum für Philologie'' 128, (1985:3-4). * Ernst Vogt: ''Bibliographie Hans Herter. Zum 65. Geburtstag am 8. Juni 1964'', Bonn 1964. ...
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Prodicus
Prodicus of Ceos (; , ''Pródikos ho Keios''; c. 465 BC – c. 395 BC) was a Greek philosopher, and part of the first generation of Sophists. He came to Athens as ambassador from Ceos, and became known as a speaker and a teacher. Plato treats him with greater respect than the other sophists, and in several of the Platonic dialogues Socrates appears as the friend of Prodicus. One writer claims Socrates used his method of instruction. Prodicus made linguistics and ethics prominent in his curriculum. The content of one of his speeches is still known, and concerns a fable in which Heracles has to make a choice between Virtue and Vice. He also interpreted religion through the framework of naturalism. Life Prodicus was a native of Ioulis on the island of Ceos, the birthplace of Simonides, whom he is described as having imitated. Prodicus came frequently to Athens for the purpose of transacting business on behalf of his native city, and attracted admiration as an orator, although ...
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Democritus
Democritus (, ; , ''Dēmókritos'', meaning "chosen of the people"; – ) was an Ancient Greece, Ancient Greek Pre-Socratic philosophy, pre-Socratic philosopher from Abdera, Thrace, Abdera, primarily remembered today for his formulation of an atomism, atomic theory of the universe. Democritus wrote extensively on a wide variety of topics. None of Democritus' original work has survived, except through second-hand references. Many of these references come from Aristotle, who viewed him as an important rival in the field of natural philosophy. He was known in antiquity as the ‘laughing philosopher’ because of his emphasis on the value of cheerfulness. Life Although many anecdotes about Democritus' life survive, their authenticity cannot be verified and modern scholars doubt their accuracy. According to Aristotle, Democritus was born in Abdera, on the coast of Thrace. He was a polymath and prolific writer, producing nearly eighty treatises on subjects such as poetry, harmon ...
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Homer
Homer (; , ; possibly born ) was an Ancient Greece, Ancient Greek poet who is credited as the author of the ''Iliad'' and the ''Odyssey'', two epic poems that are foundational works of ancient Greek literature. Despite doubts about his authorship, Homer is considered one of the most revered and influential authors in history. The ''Iliad'' centers on a quarrel between King Agamemnon and the warrior Achilles during the last year of the Trojan War. The ''Odyssey'' chronicles the ten-year journey of Odysseus, king of Homer's Ithaca, Ithaca, back to his home after the fall of Troy. The epics depict man's struggle, the ''Odyssey'' especially so, as Odysseus perseveres through the punishment of the gods. The poems are in Homeric Greek, also known as Epic Greek, a literary language that shows a mixture of features of the Ionic Greek, Ionic and Aeolic Greek, Aeolic dialects from different centuries; the predominant influence is Eastern Ionic. Most researchers believe that the poems w ...
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Leucippus
Leucippus (; , ''Leúkippos''; ) was a pre-Socratic Greek philosopher. He is traditionally credited as the founder of atomism, which he developed with his student Democritus. Leucippus divided the world into two entities: atoms, indivisible particles that make up all things, and the void, the nothingness that exists between the atoms. He developed his philosophy as a response to the Eleatics, who believed that all things are one and the void does not exist. Leucippus's ideas were influential in ancient and Renaissance philosophy. Leucippus was the first Western philosopher to develop the concept of atoms, but his ideas only bear a superficial resemblance to modern atomic theory. Leucippus's atoms come in infinitely many forms and exist in constant motion, creating a deterministic world in which everything is caused by the collisions of atoms. Leucippus described the beginning of the cosmos as a vortex of atoms that formed the Earth, the Sun, the stars, and other celest ...
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