The thirteen Discourses of Philoxenos of Mabbug (445-523) were delivered to new monks at a monastery under his episcopal care. Written in elegant Syriac, the Discourses deal with the fundamentals of the monastic and ascetic life-faith, simplicity, fear of God, renunciation, and the struggle against the demons of gluttony and fornication. This is Philoxenos's longest work and his most popular. It avoids the strident character of his letters and commentaries that were composed to advance the anti