Columbia subject headings:
Metaphysics.
Stein, Edith, Saint, 1891-1942.
Thomas, Aquinas, Saint, 1225?-1274.
Harvard subject headings:
Ontology--History.
Stein, Edith, Saint, 1891-1942
Thomas, Aquinas, Saint, 1225?-1274
Transcendentals--History.
Princeton subject headings: