"[T]he primary substance of which the early cosmologists were in search has now become a... "thing in itself." It never... lost this character again. ...[T]he elements of Empedokles, the... "homoeomeries" of Anaxagoras... the atoms of Leukippos and Demokritos, is just the Parmenidean "being." ...[A]ll materialism depends on his view of reality."