14 To begin and carry out successfully this tremendous undertaking, he earnestly called for companions from the Benedictine monasteries in his own land, then flourishing in learning, faith and charity, - for monks and nuns too, among whom Lioba was an outstanding example of evangelical perfection. They readily answered his call, and gave him precious help in his mission. And in those same lands there were not wanting those who, once the light of the Gospel had reached them, eagerly embraced the faith, and then strove mightily to bring it to all whom they could reach. Thus were those regions gradually transformed after Boniface, supported, as we have said, by the authority of the Roman Pontiffs, undertook the task; "like a new archimandrite he began everywhere to plant the divine seed and root out the cockle, to build monasteries and churches, and to put worthy shepherds in charge of them." Men and women flocked to hear him preach, and hearing him were touched by grace; they abandoned their ancient superstitions, and were set afire with love for the Redeemer; by contact with his teaching their rude and corrupt manners were changed; cleansed by the waters of baptism, they entered an entirely new way of life. Here were erected monasteries for monks and nuns, which were centers not only of religion, but also of Christian civilization, of literature, of liberal arts; there dark and unknown and impenetrable forests were cleared, or completely cut down, and new lands put to cultivation for the benefit of all; in various places dwellings were built, which in the course of centuries would grow to be populous cities.
Source: Ecclesiae Fastos (Vatican.va)