Columbia subject headings:
Asceticism--Orthodox Eastern Church.
Monastic and religious life--Early works to 1800.
Orthodox Eastern Church--Doctrines--Early works to 1800.
Spiritual life--Orthodox Eastern Church--Early works to 1800.
Symeon, the New Theologian, Saint, 949-1022.
Harvard subject headings:
Asceticism--Orthodox Eastern Church.
Monastic and religious life--Early works to 1800.
Princeton subject headings:
Asceticism--Orthodox Eastern Church.
Monastic and religious life--Early works to 1800.