The monastic system embraced two prominent classes of ascetics: 1. Hermits, or anchorites, persons who, retiring from the world, lived solitary lives in desolate places; 2. Cenobites, or monks, who formed communities and lived under a common roof. St. Antony, an Egyptian ascetic, who by his example and influence gave a tremendous impulse to the strange enthusiasm, is called the "father of the hermits." The persecutions that arose under the Roman emperors, driving thousands into the deserts, contributed vastly to the movement. The cities of Egypt became almost emptied of their Christian population. About the close of the fourth century the cenobite system was introduced into Europe, and in an astonishingly short space of time spread throughout all the western countries where Christianity had gained a foothold. Monasteries arose on every side, in the wilds of the desert and in the midst of the crowded city. The number that fled to these retreats was vastly augmented by the disorder and terror attending the invasion of the barbarians and the overthrow of the empire in the West. With the view of introducing some sort of system and uniformity among the numerous communities, fraternities or associations were early organized and spread rapidly. The three essential vows required of their members were poverty, chastity, and obedience. The most celebrated of these fraternities was the Order of the Benedictines, so called from its founder St. Benedict (A.D. 480-543). This order became immensely popular. At one time it embraced about 40,000 abbeys. ADVANTAGES OF THE MONASTIC SYSTEM.--The early establishment of the monastic system in the Church resulted in great advantages to the new world that was shaping itself out of the ruins of the old.