These and other medieval hymn-writers of the 12th and 13th centuries may be described, generally, as poet-schoolmen. Their tone is contemplative, didactic, theological; they are especially fertile and ingenious in the field of mystical interpretation. Two great monasteries in the East had, in the 8th and 9th centuries, been the principal centres of Greek hymnology; and, in the West, three monasteries--St Gall, near Constance (which was long the especial seat of German religious literature), Cluny in Burgundy and St Victor, near Paris--obtained a similar distinction. St Gall produced, besides Notker, several distinguished sequence writers, probably his pupils--Hartmann, Hermann and Gottschalk--to the last of whom Neale ascribes the "Alleluiatic Sequence" ("Cantemus cuncti melodum nunc Alleluia"), well known in England through his translation, "The strain upraise of joy and praise." The chief poets of Cluny were two of its abbots, Odo and Peter the Venerable (1122-1156), and one of Peter's monks, Bernard of Morlaix, who wrote the remarkable poem on "Contempt of the World" in about 3000 long rolling "leonine-dactylic" verses, from parts of which Neale's popular hymns, "Jerusalem the golden," &c., are taken. The abbey of St Victor, besides Adam and his follower Pistor, was destined afterwards to produce the most popular church poet of the 17th century. Bernard of Clairvaux. There were other distinguished Latin hymn-writers of the later medieval period besides those already mentioned. The name of St Bernard of Clairvaux cannot be passed over with the mere mention of the fact that he was the author of some metrical sequences. He was, in truth, the father, in Latin hymnody, of that warm and passionate form of devotion which some may consider to apply too freely to Divine Objects the language of human affection, but which has, nevertheless, been popular with many devout persons, in Protestant as well as Roman Catholic churches. F. von Spee, "Angelus Silesius," Madame Guyon, Bishop Ken, Count Zinzendorf and Frederick William Faber may be regarded as disciples in this school. Many hymns, in various languages, have been founded upon St Bernard's "Jesu dulcis memoria" ("Jesu, the very thought of Thee"), "Jesu dulcedo cordium" ("Jesu, Thou joy of loving hearts") and "Jesu Rex admirabilis" ("O Jesu, King most wonderful")--three portions of one poem, nearly 200 lines long. Pietro Damiani, the friend of Pope Gregory VII, Marbode, bishop of Rennes, in the 11th, Hildebert, archbishop of Tours, in the 12th, and St Bonaventura in the 13th centuries, are other eminent men who added poetical fame as hymnographers to high public distinction.