Ecphantus or Ecphantos () or Ephantus () was an

Ancient Greek Ancient Greek (, ; ) includes the forms of the Greek language used in ancient Greece and the classical antiquity, ancient world from around 1500 BC to 300 BC. It is often roughly divided into the following periods: Mycenaean Greek (), Greek ...

pre-Socratic Pre-Socratic philosophy, also known as early Greek philosophy, is ancient Greek philosophy before Socrates. Pre-Socratic philosophers were mostly interested in cosmology, the beginning and the substance of the universe, but the inquiries of the ...

philosopher. He is identified as a Pythagorean of the 4th century BC from Syracuse,

Magna Graecia Magna Graecia refers to the Greek-speaking areas of southern Italy, encompassing the modern Regions of Italy, Italian regions of Calabria, Apulia, Basilicata, Campania, and Sicily. These regions were Greek colonisation, extensively settled by G ...

, but the details concerning his life are historically obscure; he may have not been a historical person, but rather a fictional character invented by

Heraclides of Pontus Heraclides Ponticus ( ''Herakleides''; c. 390 BC – c. 310 BC) was a Greek philosopher and astronomer who was born in Heraclea Pontica, now Karadeniz Ereğli, Turkey, and migrated to Athens. He is best remembered for proposing that the Earth ...

for use in his philosophical dialogues. He also may have been the same figure as the attested Ecphantus of Croton. Ecphantus was also of Syracuse. He developed a theory about constellations moving. According to

Eusebius Eusebius of Caesarea (30 May AD 339), also known as Eusebius Pamphilius, was a historian of Christianity, exegete, and Christian polemicist from the Roman province of Syria Palaestina. In about AD 314 he became the bishop of Caesarea Maritima. ...

, Ecphantus, like

, was a supporter of the heliocentric theory: he believed that the Earth turns around its centre from west to towards east, like a wheel, as if it has an axis, the state.

, '' Praeparatio evangelica'', Book 15, chapter 58, section 3, line 1, Ἡρακλείδης ὁ Ποντικὸς καὶ Ἔκφαντος ὁ Πυθαγόρειος κινοῦσι μὲν τὴν γῆν, οὐ μήν γε μεταβατικῶς, ἀλλὰ τρεπτικῶς τροχοῦ δίκην ἐνηξονισμένην, ἀπὸ δυσμῶν ἐπ' ἀνατολὰς περὶ τὸ ἴδιον αὑτῆς κέντρον. Ecphantus also maintained that there is only one Cosmos (Universe) governed by providence (πρόνοια).

Notes

4th-century BC Greek philosophers Ancient Greek astronomers Ancient Syracusans European people whose existence is disputed Presocratic philosophers Pythagoreans of Magna Graecia {{AncientGreece-philosopher-stub