Columbia subject headings:
Aristotle--Ethics.
Ethics--History.
Hedonism--History.
Kant, Immanuel, 1724-1804--Ethics.
Harvard subject headings:
Aristotle--Contributions in ethics.
Aristotle--Ethics.
Ethics--History
Hedonism--History.
Kant, Immanuel, 1724-1804--Ethics.
Princeton subject headings:
Happiness.
Joy.