Columbia subject headings:
Ethics, Ancient.
Happiness in literature.
Happiness--History--To 1500.
Happiness--Philosophy.
Harvard subject headings:
Ethics, Ancient.
Happiness in literature.
Happiness--History--To 1500.
Happiness--Philosophy.
Princeton subject headings:
Ethics, Ancient.
Happiness in literature.
Happiness--History--To 1500.
Happiness--Philosophy.