Reference must next be made to Cassiodorus (479?-575)--the great Italian statesman turned monk--who did much to develop study among ecclesiastics and to make the cloister the centre of literary activity. He founded a monastery at Vivarium in Bruttium, which he endowed with his Roman library containing a magnificent collection of manuscripts, and to which he himself retired at the age of sixty. During the remaining years of his life he devoted himself to literary work; of his numerous writings the most important is his _Institutiones Divinarum et Saecularium Lectionum_. A more important work accomplished by Cassiodorus than the writings he produced was his organisation of the monastery scriptorium. This served as a model for the series of Benedictine monasteries which subsequently came into existence. Hence to Cassiodorus must be assigned the honour of realising that the multiplication of manuscripts was a recognised employment of monastic life. Consequently, he conferred a boon of the greatest value upon the human race. As Hodgkin expresses it, there was in existence an accumulated store of two thousand years of literature, sacred and profane, the writings of Hebrew prophets, of Greek philosophers, of Latin rhetoricians, perishing for want of men with leisure and ability to transcribe them. Were it not for the labours of the monks it is highly conceivable that these treasures would have been irretrievably lost to the world.[12] The number of the monastic institutions rapidly increased. Gradually the evils arising from a lack of definite control and from the want of a code of rules to check individualising tendencies, began to manifest themselves. To St. Benedict of Nursia is due the more adequate organisation of monastic life. In addition to the laws of chastity, poverty, and obedience required from the professed monk, he recognised the importance of labour not only for self-support but also as a duty towards God. The code of rules, drawn up by him for the use of the monasteries under his care, was found to meet a great need of the religious communities of the time, with the result that the Benedictine rules became almost universally accepted by all monastic establishments. Of these rules, the one that exercised a profound influence upon educational development is headed _Concerning Daily Manual Labour_.[13] It runs:--