Columbia subject headings:
Form (Philosophy)--Early works to 1800.
Neoplatonism.
One (The One in philosophy)--Early works to 1800.
Philosophy, Ancient--Early works to 1800.
Soul--Early works to 1800.
Harvard subject headings:
Form (Philosophy)--Early works to 1800.
Neoplatonism.
One (The One in philosophy)--Early works to 1800.
Philosophy, Ancient--Early works to 1800.
Plotinus. Enneads.
Soul--Early works to 1800
Princeton subject headings:
Form (Philosophy)--Early works to 1800.
Neoplatonism.
One (The One in philosophy)--Early works to 1800.
Philosophy, Ancient--Early works to 1800.
Soul--Early works to 1800.