9 We know that many of the Scottish people, who do not agree with us in faith,sincerely love the name of Christ, and strive to ascertain His doctrine and toimitate His most holy example. But how can they obtain what they are strivingfor, if they do not allow themselves to be taught heavenly things in the wayprescribed by Jesus Christ Himself; if they do not give heed to the Church whoseprecepts they are commanded to obey by the Author of faith as if they were Hisown: "He who heareth you heareth me; he who despiseth you despisethme"; if they do not seek the nourishment of their souls, and the sustenanceof all virtue, from him whom the Supreme Pastor of souls made His vicegerent, towhom He confided the care of the universal Church? In the meantime We areresolved not to fail in doing Our share, and especially to be constant infervent prayer, that God may move their minds to what is good, and vouchsafe toimpart to them the most powerful impulses of His grace. May the Divine clemency,thus earnestly implored by Us, grant to the Church that supreme consolation ofspeedily embracing the whole Scottish people, restored to the faith of theirforefathers "in spirit and in truth." What incalculable blessingswould not accrue to them, if they were once more united to us? Perfect andabsolute truth would everywhere shine forth, together with the inestimable giftswhich were forfeited by separation. There is one amongst all others, the loss of which is more deplorable than words can express; We allude to the most holy Sacrifice in which Jesus Christ, both Priest and Victim, daily offers Himself to His Father, through the ministry of His priests on earth. By virtue of this Sacrifice the infinite merits of Christ, gained by His Precious Blood shed once upon the Cross for the salvation of men, are applied to our souls. This belief prevailed among the Scottish people in St. Columba's day and in subsequent ages, when your grand and majestic cathedrals were raised throughout the land, which still testify to the art and piety of your ancestors.
Source: Caritatis Studium (Vatican.va)