Columbia subject headings:
Ontology.
Philosophy, Medieval.
Scholasticism.
Thomas, Aquinas, Saint, 1225?-1274.
Harvard subject headings:
Ontology.
Philosophy, Medieval.
Scholasticism.
Self-knowledge, Theory of.
Thomas, Aquinas, Saint, 1225?-1274
Princeton subject headings:
Self-knowledge, Theory of.
Thomas, Aquinas, Saint, 1225?-1274.