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Pre-Socratic philosophy is ancient Greek philosophy before Socrates and schools contemporary to Socrates that were not influenced by him. : φυσιολόγοι; in English, physical or natural philosophers). Their inquiries spanned the workings of the natural world as well as human society, ethics, and religion, seeking explanations based on natural principles rather than the actions of supernatural gods. They introduced to the West the notion of the world as a kosmos , an ordered arrangement that could be understood via rational inquiry. Significant figures include: the Milesians, Heraclitus, Parmenides, Empedocles, Zeno of Elea, and Democritus, among others.In Classical antiquity, the pre-Socratic philosophers were called physiologoi (Greek
Modern interest in early Greek philosophy can be traced back to 1573, when Henri Estienne collected a number of pre-Socratic fragments in Poesis Philosophica (Ποίησις Φιλόσοφος). [ sic ] was in use as early as George Grote's Plato and the Other Companions of Sokrates in 1865. Edouard Zeller was also important in dividing thought before and after Socrates. Major analyses of pre-Socratic thought have been made by Gregory Vlastos, Jonathan Barnes, and Friedrich Nietzsche in his Philosophy in the Tragic Age of the Greeks .Hermann Diels popularized the term "pre-Socratic" in Die Fragmente der Vorsokratiker ( The Fragments of the Pre-Socratics ) in 1903. However, the term "pre-Sokratic"
It may sometimes be difficult to determine the actual line of argument some pre-Socratics used in supporting their particular views. While most of them produced significant texts, none of the texts have survived in complete form. All that is available are quotations, and testimonies by later philosophers (often biased) and historians, and the occasional textual fragment.
The pre-Socratic philosophers rejected traditional mythological explanations of the phenomena they saw around them in favor of more rational explanations. Aristotle was the first to call them physiologoi or physikoi ("physicists", after physis , "nature") and differentiate them from the earlier theologoi (theologians), or mythologoi (story tellers and bards) who attributed these phenomena to various gods.Diogenes Laërtius divides the physiologoi into two groups: Ionian, led by Anaximander, and Italiote, led by Pythagoras. These philosophers asked questions about "the essence of things":
Others concentrated on defining problems and paradoxes that became the basis for later mathematical, scientific and philosophic study.
Later philosophers rejected many of the answers the early Greek philosophers provided, but continued to place importance on their questions. Furthermore, the cosmologies proposed by them have been updated by later developments in science.
Coming from the eastern or western fringes of the Greek world, the pre-Socratics were the forerunners of what became Western philosophy as well as natural philosophy, which later developed into the natural sciences (such as physics, chemistry, geology, and astronomy).Their efforts were directed to the investigation of the ultimate basis and essential nature of the external world. They sought the material principle ( archê ) of things, and the method of their origin and disappearance. As the first philosophers, they emphasized the rational unity of things and rejected supernatural explanations, instead seeking natural principles at work in the world and human society. The pre-Socratics saw the world as a kosmos , an ordered arrangement that could be understood via rational inquiry. Pre-Socratic thinkers present a discourse concerned with key areas of philosophical inquiry such as being, the primary stuff of the universe, the structure and function of the human soul, and the underlying principles governing perceptible phenomena, human knowledge and morality.
Only fragments of the original writings of the pre-Socratics survive (many entitled Peri Physeos, or On Nature , a title probably attributed later by other authors).The knowledge we have of them derives from accounts - known as doxography - of later philosophical writers (especially Aristotle, Plutarch, Diogenes Laërtius, Stobaeus and Simplicius), and some early theologians (especially Clement of Alexandria and Hippolytus of Rome).
The translation of Peri Physeos as On Nature may be misleading: the "on" normally gives the idea of an "erudite dissertation", while " peri " may refer in fact to a "circular approach"; and the traditional meanings of "nature" for us (as opposition to culture, to supernatural, or as essence, substance, opposed to accident, etc.) may be in contrast with the meaning of "physeos" or " physis " for the Greeks (referring to an "originary source", or "process of emergence and development").
The first pre-Socratic philosophers were from Miletus on the western coast of Anatolia. Thales (624-546 BC) is reputedly the father of Greek philosophy; he declared water to be the basis of all things.Next came Anaximander (610-546 BC), the first writer on philosophy. He assumed as the first principle an undefined, unlimited substance without qualities ( apeiron ), out of which the primary opposites, hot and cold, moist and dry, became differentiated. His younger contemporary, Anaximenes (585-525 BC), took for his principle air, conceiving it as modified, by thickening and thinning, into fire, wind, clouds, water, and earth.
The practical side of philosophy was introduced by Pythagoras (582-496 BC). Regarding the world as perfect harmony, dependent on number, he aimed at inducing humankind likewise to lead a harmonious life. His doctrine was adopted and extended by a large following of Pythagoreans who gathered at his school in south Italy in the town of Croton.His followers included Philolaus (470-380 BC), Alcmaeon of Croton, and Archytas (428-347 BC).
The Ephesian philosophers were interested in the natural world and the properties by which it is ordered. Xenophanes and Heraclitus were able to push philosophical inquiry further than the Milesian school by examining the nature of philosophical inquiry itself. In addition, they were also invested in furthering observations and explanations regarding natural and physical process and also the functions and processes of the human subjective experience.
Heraclitus and Xenophanes both shared interests in analyzing philosophical inquiry as they contemplated morality and religious belief. This was because they wanted to figure out the proper methods of understanding human knowledge and the ways humans fit into the world. This was much different than natural philosophy that was being done by other philosophers as it questioned how the operations of the universe as well as the human positions within the universe.
Heraclitus posited that all things in nature are in a state of perpetual flux, connected by logical structure or pattern, which he termed Logos . To Heraclitus, fire, one of the four classical elements, motivates and substantiates this eternal pattern. From fire all things originate, and return to it again in a process of eternal cycles.
The Eleatics emphasized the doctrine of the One. Xenophanes (570-470 BC) declared God to be the eternal unity, permeating the universe, and governing it by his thought.Parmenides (510-440 BC) affirmed the one unchanging existence to be alone true and capable of being conceived, and multitude and change to be an appearance without reality. This doctrine was defended by his younger countryman Zeno of Elea (490-430 BC) in a polemic against the common opinion which sees in things multitude, becoming, and change. Zeno propounded a number of celebrated paradoxes, much debated by later philosophers, which try to show that supposing that there is any change or multiplicity leads to contradictions. Melissus of Samos (born c. 470 BC) was another eminent member of this school.
Empedocles appears to have been partly in agreement with the Eleatic School, partly in opposition to it. On the one hand, he maintained the unchangeable nature of substance; on the other, he supposes a plurality of such substances - i.e. four classical elements, earth, water, air, and fire. Of these the world is built up, by the agency of two ideal motive forces - love as the cause of union, strife as the cause of separation.Anaxagoras (500-428 BC) in Asia Minor also maintained the existence of an ordering principle as well as a material substance, and while regarding the latter as an infinite multitude of imperishable primary elements, he conceived divine reason or Mind ( nous ) as ordering them. He referred all generation and disappearance to mixture and resolution respectively. To him belongs the credit of first establishing philosophy at Athens.
The first explicitly materialistic system was formed by Leucippus (5th century BC) and his pupil Democritus (460-370 BC) from Thrace. This was the doctrine of atoms - small primary bodies infinite in number, indivisible and imperishable, qualitatively similar, but distinguished by their shapes. Moving eternally through the infinite void, they collide and unite, thus generating objects which differ in accordance with the varieties, in number, size, shape, and arrangement, of the atoms which compose them.
Diogenes of Apollonia from Thrace (born c. 460 BC) was an eclectic philosopher who adopted many principles of the Milesian school, especially the single material principle, which he identified as air. He explained natural processes in reference to the rarefactions and condensations of this primary substance. He also adopted Anaxagoras' cosmic thought.
The sophists held that all thought rests solely on the apprehensions of the senses and on subjective impression, and that therefore we have no other standards of action than convention for the individual.Specializing in rhetoric, the sophists were typically seen more as professional educators than philosophers. The sophists traveled extensively educating people throughout Greece. Unlike philosophical schools, the sophists had no common set of philosophical doctrines that connected them to each other. They did, however, focus on teaching techniques of debate and persuasion which centered around the study of language, semantics, and grammar for use in convincing people of certain viewpoints. They also taught students their own interpretations of the social sciences, mathematics, history, among others. They flourished as a result of a special need at that time for Greek education. Prominent sophists include Protagoras (490-420 BC) from Abdera in Thrace, Gorgias (487-376 BC) from Leontini in Sicily, Hippias (485-415 BC) from Elis in the Peloponnesos, Prodicus (465-390 BC) from the island of Ceos, and Thrasymachus (459-400 BC) from Chalcedon on the Bosphorus.
The first mythologoi were:
The Seven Sages of Greece or Seven Wise Men (Greek: οἱ ἑπτὰ σοφοί hoi hepta sophoi) was the title given by classical Greek tradition to seven philosophers, statesmen, and law-givers of the 6th century BC who were renowned for their wisdom.
Anaximander, was a pre-Socratic Greek philosopher who lived in Miletus, a city of Ionia. He belonged to the Milesian school and learned the teachings of his master Thales. He succeeded Thales and became the second master of that school where he counted Anaximenes and, arguably, Pythagoras amongst his pupils.
Anaxagoras was a Pre-Socratic Greek philosopher. Born in Clazomenae at a time when Asia Minor was under the control of the Persian Empire, Anaxagoras came to Athens. According to Diogenes Laërtius and Plutarch, in later life he was charged with impiety and went into exile in Lampsacus; the charges may have been political, owing to his association with Pericles, if they were not fabricated by later ancient biographers.
Anaximenes of Miletus was an Ancient Greek Pre-Socratic philosopher active in the latter half of the 6th century BC. The details of his life are obscure because none of his work has been preserved. Anaximenes' ideas and philosophies are only known today because of comments made by Aristotle and other writers on the history of Greek philosophy.
Democritus was an Ancient Greek pre-Socratic philosopher primarily remembered today for his formulation of an atomic theory of the universe.
Empedocles was a Greek pre-Socratic philosopher and a citizen of Akragas, a Greek city in Sicily. Empedocles' philosophy is best known for originating the cosmogonic theory of the four classical elements. He also proposed forces he called Love and Strife which would mix and separate the elements, respectively. These physical speculations were part of a history of the universe which also dealt with the origin and development of life.
Heraclitus of Ephesus was a pre-Socratic Ionian Greek philosopher, and a native of the city of Ephesus, in modern-day Turkey and then part of the Persian Empire.
Leucippus is reported in some ancient sources to have been a philosopher who was the earliest Greek to develop the theory of atomism—the idea that everything is composed entirely of various imperishable, indivisible elements called atoms. Leucippus often appears as the master to his pupil Democritus, a philosopher also touted as the originator of the atomic theory.
Parmenides of Elea was a pre-Socratic Greek philosopher from Elea in Magna Graecia. Parmenides has been considered the founder of metaphysics or ontology and has influenced the whole history of Western philosophy. He was the founder of the Eleatic school of philosophy, which also included Zeno of Elea and Melissus of Samos. Zeno's paradoxes of motion were to defend Parmenides' view.
Zeno of Elea was a pre-Socratic Greek philosopher of Magna Graecia and a member of the Eleatic School founded by Parmenides. Aristotle called him the inventor of the dialectic. He is best known for his paradoxes, which Bertrand Russell has described as "immeasurably subtle and profound".
Ancient Greek philosophy arose in the 6th century BC and continued throughout the Hellenistic period and the period in which Greece and most Greek-inhabited lands were part of the Roman Empire. Philosophy was used to make sense out of the world in a non-religious way. It dealt with a wide variety of subjects, including astronomy, mathematics, political philosophy, ethics, metaphysics, ontology, logic, biology, rhetoric and aesthetics.
Xenophanes of Colophon was a Greek philosopher, theologian, poet, and social and religious critic. Xenophanes lived a life of travel, having left Ionia at the age of 25 and continuing to travel throughout the Greek world for another 67 years. Some scholars say he lived in exile in Sicily. Knowledge of his views comes from fragments of his poetry, surviving as quotations by later Greek writers. To judge from these, his elegiac and iambic poetry criticized and satirized a wide range of ideas, including Homer and Hesiod, the belief in the pantheon of anthropomorphic gods and the Greeks' veneration of athleticism. He is the earliest Greek poet who claims explicitly to be writing for future generations, creating "fame that will reach all of Greece, and never die while the Greek kind of songs survives."
The Eleatics were a pre-Socratic school of philosophy founded by Parmenides in the early fifth century BC in the ancient town of Elea. Other members of the school included Zeno of Elea and Melissus of Samos. Xenophanes is sometimes included in the list, though there is some dispute over this. Elea, whose modern-day appellation is Velia, was a Greek colony located in present-day Campania in southern Italy.
The Ionian school of Pre-Socratic philosophy was centred in Miletus, Ionia in the 6th century BC. Miletus and its environs was a thriving mercantile melting pot of current ideas of the time. The Ionian School included such thinkers as Thales, Anaximander, Anaximenes, Heraclitus, Anaxagoras, and Archelaus. The collective affinity of this group was first acknowledged by Aristotle who called them physiologoi (φυσιολόγοι), meaning 'those who discoursed on nature'. The classification can be traced to the second-century historian of philosophy Sotion. They are sometimes referred to as cosmologists, since they were largely physicalists who tried to explain the nature of matter.
Philosophy in the Tragic Age of the Greeks is an incomplete book by Friedrich Nietzsche. He had a clean copy made from his notes with the intention of publication. The notes were written around 1873. In it he discussed five Greek philosophers from the sixth and fifth centuries BC. They are Thales, Anaximander, Heraclitus, Parmenides, and Anaxagoras. He had, at one time, intended to include Democritus, Empedocles, and Socrates. The book ends abruptly after the discussion of Anaxagoras's cosmogony.
Physis is a Greek theological, philosophical, and scientific term usually translated into English as "nature".
Hermann Alexander Diels was a German classical scholar.
The Ionian Enlightenment was a set of advances in scientific thought, explanations on nature, and discovering the natural and rational causes behind observable phenomena, that took place in archaic Greece beginning in the 6th century BC. This movement began on the Ionian coast of western Anatolia by small numbers of forward-thinking Greeks from cities such as Miletus, Samos, and Halicarnassus. They saw the world as something ordered and intelligible, its history following an explicable course and its different parts arranged in a comprehensible system. Most historians agree that Thales, one of the Seven Sages of Greece, started this movement by predicting a solar eclipse that actually occurred, though some believe this feat to be false.
In philosophy, becoming is the possibility of change in a thing that has being, that exists.
Philosophy of motion is a branch of philosophy concerned with exploring questions on the existence and nature of motion. The central questions of this study concern the epistemology and ontology of motion, whether motion exists as we perceive it, what is it, and, if it exists, how does it occur. The philosophy of motion is important in the study of theories of change in natural systems and is closely connected to studies of space and time in philosophy.
Diels–Kranz (DK) numbering is the standard system for referencing the works of the ancient Greek pre-Socratic philosophers, based on the collection of quotations from and reports of their work, Die Fragmente der Vorsokratiker, by Hermann Alexander Diels. The Fragmente was first published in 1903, was later revised and expanded three times by Diels, and was finally revised in a fifth edition (1934–7) by Walther Kranz and again in a sixth edition (1952). In Diels-Kranz, each passage, or item, is assigned a number which is used to uniquely identify the ancient personality with which it is concerned, and the type of item given. Diels-Kranz is used in academia to cite pre-Socratic philosophers, and the system also encompasses Sophists and pre-Homeric poets such as Orpheus.
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