This is the first complete and unabridged translation into English of this key text from one of the most important masters of the spiritual life. Cassian's teaching underlies that of St. Philip Neri and St. Francis de Sales and was also one of the major influences on St. Benedict. Newly translated by Fr. Jerome Bertram of the Oxford Oratory. Includes "On the training of a Monk" and "The Eight Deadly Sins." A spiritual classic with practical advice on how to become holy.