Parmenides
Parmenides of Elea was a pre-Socratic Greek philosopher from Elea in Magna Graecia.
Parmenides was born in the Greek colony of Elea to a wealthy and illustrious family. The exact date of his birth is not known with certainty; on the one hand, according to the doxographer Diogenes Laërtius, Parmenides flourished in the period immediately preceding 500 BC, which would place his year of birth around 540 BC; on the other hand, in the dialogue Parmenides Plato portrays him as visiting Athens at the age of 65, when Socrates was a young man,, which, if true, suggests a potential year of birth of. Parmenides is thought to have been in his prime around 475 BC.
The single known work by Parmenides is a philosophical poem in dactylic hexameter verse whose original title is unknown but which is often referred to as On Nature. Only fragments of it survive, but the integrity of the poem is remarkably higher than what has come down to us from the works of almost all other pre-Socratic philosophers, and therefore classicists can reconstruct the philosophical doctrines with greater precision. In his poem, Parmenides prescribes two views of reality. The first, the way of "Aletheia" or truth, describes how all reality is one, change is impossible, and existence is timeless and uniform. The second view, the way of "Doxa" or opinion, describes the world of appearances, in which one's sensory faculties lead to conceptions which are false and deceitful.
Parmenides has been considered the founder of ontology and has, through his influence on Plato, influenced the whole history of Western philosophy. He is also considered to be the founder of the Eleatic school of philosophy, which also included Zeno of Elea and Melissus of Samos. Zeno's paradoxes of motion were developed to defend Parmenides's views. In contemporary philosophy, Parmenides's work has remained relevant in debates about the philosophy of time.
Biography
Parmenides was born in Elea to an aristocratic family. Diogenes Laertius says that his father was Pires. Laertius transmits two divergent sources regarding the teacher of the philosopher. One, dependent on Sotion, indicates that he was first a student of Xenophanes, but did not follow him, and later became associated with a Pythagorean, Aminias, whom he preferred as his teacher. Another tradition, dependent on Theophrastus, indicates that he was a disciple of Anaximander.Chronology
Parmenides was one of the pre-Socratic philosophers. As with all pre-Socratic philosophers, the little known about his life and work comes from writings and quotations by later philosophers. Parmenides founded his school of thought in Elea. His ideas were followed by Melissus of Samos and Zeno of Elea, with the latter being a close friend of Parmenides.Date of birth
All conjectures regarding Parmenides's date of birth are based on two ancient sources. One comes from Apollodorus and is transmitted to us by Diogenes Laertius: this source marks the Olympiad 69th as the moment of maturity, placing his birth 40 years earlier. The other is Plato, in his dialogue Parmenides. There Plato composes a situation in which Parmenides, 65, and Zeno, 40, travel to Athens to attend the Panathenaic Games. On that occasion they meet Socrates, who was still very young according to the Platonic text.File:Greek vase with runners at the panathenaic games 530 bC.jpg|thumb|200px|Greek vase with runners at the panathenaic games,. In Plato's dialogue, Parmenides and Zeno debate a young Socrates during these games
The inaccuracy of the dating from Apollodorus is well known, who chooses the date of a historical event to make it coincide with the maturity of a philosopher, a maturity that he invariably reached at forty years of age. He tries to always match the maturity of a philosopher with the birth of his alleged disciple. In this case Apollodorus, according to Burnet, based his date of the foundation of Elea to chronologically locate the maturity of Xenophanes and thus the birth of his supposed disciple, Parmenides. Knowing this, Burnet and later classicists like Cornford, Raven, Guthrie, and Schofield preferred to base the calculations on the Platonic dialogue. According to the latter, the fact that Plato adds so much detail regarding ages in his text is a sign that he writes with chronological precision. Plato says that Socrates was very young, and this is interpreted to mean that he was less than twenty years old. We know the year of Socrates's death and his age—he was about seventy years old—making the date of his birth 469 BC. The Panathenaic games were held every four years, and of those held during Socrates's youth, the most likely is that of 450 BC, when Socrates was nineteen years old. Thus, if at this meeting Parmenides was about sixty-five years old, his birth occurred around 515 BC.
However, neither Raven nor Schofield, who follows the former, finds a dating based on a late Platonic dialogue entirely satisfactory. Other scholars directly prefer not to use the Platonic testimony and propose other dates. According to a scholar of the Platonic dialogues, R. Hirzel, Conrado Eggers Lan indicates that the historical has no value for Plato. The fact that the meeting between Socrates and Parmenides is mentioned in the dialogues Theaetetus and Sophist only indicates that it is referring to the same fictional event, and this is possible because both the Theaetetus and the Sophist are considered after the Parmenides. In Soph. 217c the dialectic procedure of Socrates is attributed to Parmenides, which would confirm that this is nothing more than a reference to the fictitious dramatic situation of the dialogue. Eggers Lan proposes a correction of the traditional date of the foundation of Elea. Based on Herodotus I, 163–167, which indicates that the Phocians, after defeating the Carthaginians in naval battle, founded Elea, and adding the reference to Thucydides I, 13, where it is indicated that such a battle occurred in the time of Cambyses II, the foundation of Elea can be placed between 530 BC and 522 BC So Parmenides could not have been born before 530 BC or after 520 BC, given that it predates Empedocles. This last dating procedure is not infallible either, because it has been questioned that the fact that links the passages of Herodotus and Thucydides is the same. Nestor Luis Cordero also rejects the chronology based on the Platonic text, and the historical reality of the encounter, in favor of the traditional date of Apollodorus. He follows the traditional datum of the founding of Elea in 545 BC, pointing to it not only as terminus post quem, but as a possible date of Parmenides's birth, from which he concludes that his parents were part of the founding contingent of the city and that he was a contemporary of Heraclitus.
Timeline relative to other Presocratics
Parmenides would have been familiar with previous philosophers, such as the Milesians, as well as writers such as Homer and Hesiod. He may have known a Pythagorean philosopher, Ameinias, who introduced him to philosophy. Parmenides is sometimes described as beginning his study in the Milesian school under the tutelage of Anaximenes. He may alternatively have been a student of Xenophanes. Plato said that Parmenides traveled to Athens in 450 BCE, where he interacted with Socrates in the latter's youth.Rather than attempt to estimate Parmenides' chronology from ancient testimony, some scholars have turned directly to passages in his work to determine which other presocratic philosophers he may have influenced, and which philosophers may have been reacting to his doctrines, and working backwards to get a better estimate of the time in which he lived, including allusions to the doctrine of Anaximenes and the Pythagoreans, and also against Heraclitus, while Empedocles and Anaxagoras frequently refer to Parmenides. The Atomist doctrines of are also seen as reactions to the doctrines of the later Eleatics who followed Parmenides. However, the philosopher whose potential influence has provoked the most discussion is Heraclitus of Ephesus.
The potential references to Heraclitus in Parmenides work have been debated. Bernays's thesis that Parmenides attacks Heraclitus, to which Diels, Kranz, Gomperz, Burnet and others adhered. However, at the same time Karl Reinhardt postulates his thesis of chronological inversion: Heraclitus would be posterior to Parmenides, so the passage could not have objected to the doctrine of that one. Werner Jaeger followed suit on this point: he believes that the goddess's criticism is addressed to all mortals. Although Heraclitus criticized other philosophers such as Xenophanes and Pythagoras, he does not include Parmenides in this list. Guthrie finds it surprising that Heraclitus would not have censured Parmenides if he had known him. His conclusion, however, does not arise from this consideration, but points out that, due to the importance of his thought, Parmenides splits the history of pre-Socratic philosophy in two, therefore his position with respect to other thinkers it is easy to determine. And, from this point of view, the philosophy of Heraclitus seems to him pre-Parmenidean, while those of Empedocles, Anaxagoras and Democritus are post-Parmenidean. The evidence also suggests that Parmenides could not have written much after the death of Heraclitus. Regardless of the acceptance or rejection of the chronological inversion, Guthrie also leans by this interpretation, but with important nuances: the goddess refers, effectively, to all mortals. However, Heraclitus could be exceptionally representative of the "judgmentless multitude", since the error that characterizes these is based on reliance on the eyes and ears ; and Heraclitus preferred the visible to the audible. He adds that the Heraclitean assertions “wills and does not will”, “on diverging converges”, “on changing is at rest” “evidence of the quintessence of what Parmenides deplores here». In light of this accumulation of evidence, he points out, it is for this reason that what many have seen as the only unequivocal reference to Heraclitus in verse 9 of fr. 6. “Where no isolated sentence provides conviction, the cumulative effect may be of vital importance.”