Parmenides

Parmenides of Elea (c. 515–450 BCE) was a Presocratic philosopher from the Greek colony of Elea in southern Italy. He composed a philosophical poem, usually titled On Nature, of which about 150 lines survive in quotation by later authors such as Simplicius and Sextus Empiricus. Through its argument that what is cannot come from what is not, and that change and plurality are appearances, he founded the Eleatic school. He is said to have taught Zeno of Elea, and Plato portrays him in the dialogue that bears his name.