Updated September 2026
About John Cassian
John Cassian, also known as John the Ascetic and John Cassian the Roman, was a Christian monk and theologian celebrated in both the Western and Eastern churches for his mystical writings. Cassian is noted for his role in bringing the ideas and practices of early Christian monasticism to the medieval West.
Biography from Wikipedia, CC BY-SA 4.0. Photo via Wikimedia Commons.
Authors like John Cassian
Sources: book lists and dates from Wikidata and Open Library, ratings from Open Library readers. Last updated September 2026.