0 Amid the many and great demonstrations of affection which from almost all the peoples of the earth have come to Us, and are still coming to Us, in congratulation upon the happy attainment of the fiftieth anniversary of Our priesthood, there is one which moves Us in a quite special way. We mean one which comes from Brazil, where, upon the occasion of this happy event, large numbers of those who in that vast empire groan beneath the yoke of slavery, have been legally set free. And this work, so full of the spirit of Christian mercy, has been offered up in cooperation with the clergy, by charitable members of the laity of both sexes, to God, the Author and Giver of all good things, in testimony of their gratitude for the favor of the health and the years which have been granted to Us. But this was specially acceptable and sweet to Us because it lent confirmation to the belief, which is so welcome to Us, that the great majority of the people of Brazil desire to see the cruelty of slavery ended, and rooted out from the land. This popular feeling has been strongly seconded by the emperor and his august daughter, and also by the ministers, by means of various laws which, with this end in view, have been introduced and sanctioned. We told the Brazilian ambassador last January what a consolation these things were to Us, and We also assured him that We would address letters to the bishops of Brazil in behalf of these unhappy slaves.
Source: In Plurimis (Vatican.va)