Columbia subject headings:
Happiness--Early works to 1800.
Philosophy and religion--Early works to 1800.
Philosophy, Medieval--Early works to 1800.
Theology--Early works to 1800.
Harvard subject headings:
Happiness--Early works to 1800
Philosophy and religion--Early works to 1800.
Theology--Early works to 1800
Princeton subject headings:
Happiness--Early works to 1800.
Philosophy and religion--Early works to 1800.
Theology--Early works to 1800.