Parmenides (fl. c. 475 BC)
Parmenides was a Greek philosopher of Elea in southern Italy. He was the foremost of the Eleatics. His philosophy, anchored on the proposition What is is," denied the reality of multiplicity and change. His uncompromising attempt to deduce the properties of the Real – a single eternal solid, all-embracing yet undifferentiated – marks the beginning of the Western tradition of philosophical reasoning. See also pre-Socratic philosophy.