Acedia: Its Evolution from Deadly Sin to Psychiatric Syndrome
Mark D. Altschule
Iohannes Cassianus, more commonly known as John Cassian, wrote his treatise De Institutis Coenobiorum et de Octo Principalium Vitiorum Remediis Libri XII around the beginning of fifth century A.D. This work is important because it introduced certain Eastern ideas into Western thought. Some these are considerable psychiatric interest.
British Journal of Psychiatry|PubMed