Columbia subject headings:
Aristotle.
Hegel, Georg Wilhelm Friedrich, 1770-1831.
Kant, Immanuel, 1724-1804.
Harvard subject headings:
Aristotle
Hegel, Georg Wilhelm Friedrich, 1770-1831
Kant, Immanuel, 1724-1804
Princeton subject headings:
Aristotle.
Hegel, Georg Wilhelm Friedrich, 1770-1831.
Kant, Immanuel, 1724-1804.