Cassian. John Cassian, monk and ascetic writer of Southern
Gaul, and the first to introduce the rules of Eastern monasticism into the
West, was born probably in Provence about 360; and died near Marseilles
about 435. The two principal works of Cassian are the Institutes;
De institutis coenobiorum et de octo principalium uitiorum remediis libri
XII; and the Collations or Conferences,
Collationes XXIV. The author has himself remarked upon the
relation between the two works: These books (the Institutes)
. . . are mainly taken up with what belongs to the outer man and the
customs of the coenobis; the others (the Conferences) deal
rather with the training of the inner man and the perfection of the heart.
The best edition of the works of Cassian is that by Petschenig, Vienna,
Although never formally canonized, from very early days Cassian was regarded
as a saint. At Marseilles his feast (with an octave) is celebrated 23 July,
and his name is found in the Greek Calendar.