Columbia subject headings:
Harvard subject headings:
Asceticism--Catholic Church--Early works to 1800.
Contemplation--Early works to 1800.
Spiritual life--Christianity--Early works to 1800.
Princeton subject headings:
Asceticism--Catholic Church--Early works to 1800.
Contemplation--Early works to 1800.
Spiritual life--Christianity--Early works to 1800.