Columbia subject headings:
Catholic Church--Doctrines--Early works to 1800.
Perfection--Religious aspects--Catholic Church--Early works to 1800.
Harvard subject headings:
Catholic Church--Doctrines--Early works to 1800.
Perfection--Religious aspects--Catholic Church--Early works to 1800.
Spiritual life--Catholic Church--Early works to 1800.
Princeton subject headings:
Catholic Church--Doctrines--Early works to 1800.
Perfection--Religious aspects--Catholic Church--Early works to 1800.