Columbia subject headings:
Harvard subject headings:
Aristotle. De Xenophane, Zenone et Gorgia.
Princeton subject headings:
Aristotle. De Melisso, Xenophane, Gorgia.
Gorgias, of Leontini
Melissus, Samius
Philosophers, Ancient.
Xenophanes, approximately 570 B.C.-approximately 478 B.C.
Zeno, of Elea