Ecphantus or Ecphantos () or Ephantus () is a shadowy Greek pre-Socratic philosopher. He may not have actually existed. He is identified as a Pythagorean of the 4th century BCE, and as a supporter of the heliocentric theory. Described as from Syracuse, this may or may not be the same figure as the attested Ecphantus of Croton. Ecphantus accepted the existence of atoms. He accepts the existence of void, empty space. Ecphantus maintained that the Cosmos is made of atoms and there is only one Cosmos (Universe) governed by providence (πρόνοια). He is the first of the Pythagoreans to attribute physical substance to the Pythagorean units (see Unit-point atomism). Ecphantus, like Heraclides of Pontus, believed that the Earth turns around its centre from west to towards east, like a wheel, as if it has an axis, the state. Notes External links Cosmovisions 4th-century BC Greek people 4th-century BC philosophers Ancient Greek astronomers Ancient Syracusans People whose existence is disputed Presocratic philosophers Pythagoreans of Magna Graecia