Alexander Clarence Flick, The Rise of the Mediaeval Church
“ These early monasteries were like swarming bees in planting monastic societies in every part of western Europe. The passion grew until it became a veritable madness which seized the pious and lawless alike. Popes like Gregory I. praised the institution and promoted its interest in every possible way. Even kings like Carloman of the Franks, Rochis of the Lombards, great statesmen like Cassiodorus, and others voluntarily became monks. Louis the Pious, the Roman Emperor, was prevented from that course only by his nobles. ”
