Parmenides of Elea (fl. late sixth or early fifth century BC) was a pre-Socratic Greek philosopher from Elea in Magna Graecia (Greater Greece, which included Southern Italy).
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.