Columbia subject headings:
Heidegger, Martin, 1889-1976.
Kant, Immanuel, 1724-1804.
Leibniz, Gottfried Wilhelm, Freiherr von, 1646-1716.
Ontology.
Philosophy, Modern.
Thought and thinking.
Harvard subject headings:
Heidegger, Martin, 1889-1976
Kant, Immanuel, 1724-1804
Leibniz, Gottfried Wilhelm, Freiherr von, 1646-1716
Ontology
Philosophy, Modern
Thought and thinking
Princeton subject headings: