Rite Expiatis §36

³⁶ From this source, therefore, there arose that profound impulse toward a saving reform of human society, toward that vast expansion and growth among Christian nations which had its beginnings in the new Order of which Francis was the Father and Teacher. Innocence of life, too, blossomed forth once more in union with the spirit of penance. From this source arose that ardent zeal which impelled not only pontiffs, cardinals, and bishops to accept the badge of the Third Order, but also kings and princes who imbibed, together with the Franciscan spirit, evangelical wisdom and, from among whom, some rose even to the glory of sainthood. The noblest virtues, too, came back into public esteem and honor. In a word, the "face of the earth itself was changed."