Pope Pius VI: Charitas (Charity)

"Love, which is patient and kindly, as the Apostle Paul says, supports and endures all things as long as a hope remains that mildness will prevent the growth of incipient errors. But if errors increase daily and reach the point of creating schism, the laws of love itself, together with Our duty, demand that We reveal to the erring their horrible sin and the heavy canonical penalties which they have incurred. For this sternness will lead those who are wandering from the way of truth to recover their senses, reject their errors, and come back to the Church, which opens its arms like a kind mother and embraces them on their return. The rest of the faithful in this way will be quickly delivered from the deceits of false pastors who enter the fold by ways other than the door, and whose only aim is theft, slaughter, and destruction."