The Eretrian school of philosophy was originally the School of

Elis Elis or Ilia ( el, Ηλεία, ''Ileia'') is a historic region in the western part of the Peloponnese peninsula of Greece. It is administered as a regional unit of the modern region of Western Greece. Its capital is Pyrgos. Until 2011 it was ...

, where it had been founded by

Phaedo of Elis Phaedo of Elis (; also ''Phaedon''; grc-gre, Φαίδων ὁ Ἠλεῖος, ''gen''.: Φαίδωνος; fl. 4th century BCE) was a Greek philosopher. A native of Elis, he was captured in war as a boy and sold into slavery. He subsequently ...

; it was later transferred to

Eretria Eretria (; el, Ερέτρια, , grc, Ἐρέτρια, , literally 'city of the rowers') is a town in Euboea, Greece, facing the coast of Attica across the narrow South Euboean Gulf. It was an important Greek polis in the 6th and 5th centur ...

by his pupil

Menedemus Menedemus of Eretria ( grc-gre, Μενέδημος ὁ Ἐρετριεύς; 345/44 – 261/60 BC) was a Greek philosopher and founder of the Eretrian school. He learned philosophy first in Athens, and then, with his friend Asclepiades, he subseq ...

. It can be referred to as the Elian-Eretrian School, on the assumption that the views of the two schools were similar. It died out after the time of Menedemus (3rd century BC), and, consequently, very little is known about its tenets. Phaedo had been a pupil of

Socrates Socrates (; ; –399 BC) was a Greek philosopher from Athens who is credited as the founder of Western philosophy and among the first moral philosophers of the ethical tradition of thought. An enigmatic figure, Socrates authored no te ...

, and

Plato Plato ( ; grc-gre, Πλάτων ; 428/427 or 424/423 – 348/347 BC) was a Greek philosopher born in Athens during the Classical period in Ancient Greece. He founded the Platonist school of thought and the Academy, the first institution ...

named a dialogue, ''

Phaedo ''Phædo'' or ''Phaedo'' (; el, Φαίδων, ''Phaidōn'' ), also known to ancient readers as ''On The Soul'', is one of the best-known dialogues of Plato's middle period, along with the '' Republic'' and the '' Symposium.'' The philosophica ...

'', in his honor, but it is not possible to infer his doctrines from the dialogue. Menedemus was a pupil of

Stilpo Stilpo (or Stilpon; el, Στίλπων, gen.: Στίλπωνος; c. 360 – c. 280 BC) was a Greek philosopher of the Megarian school. He was a contemporary of Theophrastus, Diodorus Cronus, and Crates of Thebes. None of his writings survive, ...

at Megara before becoming a pupil of Phaedo; in later times, the views of his school were often linked with those of the

Megarian school The Megarian school of philosophy, which flourished in the 4th century BC, was founded by Euclides of Megara, one of the pupils of Socrates. Its ethical teachings were derived from Socrates, recognizing a single good, which was apparently combin ...

. Menedemus' friend and colleague in the Eretrian school was

Asclepiades of Phlius Asclepiades is the name of: * An epithet for the children of Asclepius; Hygieia, Iaso, Aceso, Aegle, Panacea, Meditrina, Machaon, Podaleirios, Telesphoros, Aratus * Asclepiades of Tragilus (4th century BC), critic and mythographer, author of ' ...

. Like the Megarians they seem to have believed in the individuality of "the Good," the denial of the plurality of

virtue Virtue ( la, virtus) is moral excellence. A virtue is a trait or quality that is deemed to be morally good and thus is valued as a foundation of principle and good moral being. In other words, it is a behavior that shows high moral standards ...

, and of any real difference existing between the Good and the True.

Cicero Marcus Tullius Cicero ( ; ; 3 January 106 BC – 7 December 43 BC) was a Roman statesman, lawyer, scholar, philosopher, and academic skeptic, who tried to uphold optimate principles during the political crises that led to the esta ...

tells us that they placed all good in the mind, and in that acuteness of mind by which the

truth Truth is the property of being in accord with fact or reality.Merriam-Webster's Online Dictionarytruth 2005 In everyday language, truth is typically ascribed to things that aim to represent reality or otherwise correspond to it, such as belie ...

is discerned. They denied that truth could be inferred by negative categorical

proposition In logic and linguistics, a proposition is the meaning of a declarative sentence. In philosophy, " meaning" is understood to be a non-linguistic entity which is shared by all sentences with the same meaning. Equivalently, a proposition is the no ...

s, and would only allow positive ones, and of these only simple ones. Diogenes Laërtius, ii, 135.

Notes

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