Columbia subject headings:
Monastic and religious life--Early works to 1800.
Spiritual life--Catholic Church--Early works to 1800.
Harvard subject headings:
Monastic and religious life--Early works to 1800.
Spiritual life--Catholic Church--Early works to 1800.
Princeton subject headings:
Asceticism--Early works to 1800.
Mysticism--Early works to 1800.