Columbia subject headings:
Classical philology.
Neoplatonism.
Ontology.
Philosophy, Ancient.
Platonists.
Harvard subject headings:
Classical philology.
Neoplatonism.
Ontology.
Philosophy, Ancient.
Platonists.
Princeton subject headings:
Classical philology.
Neoplatonism.
Ontology.
Philosophy, Ancient.
Platonists.