P. Pius IX Solemn Allocution
Singulari Quadam
December 9, 1854
It is to be held of faith that none can be saved outside the Apostolic Roman Church . . . but nevertheless it is equally certain that those who are ignorant of the true religion, if that ignorance is invincible, will not be held guilty in the matter in the eyes of the Lord.
(Denzinger 1641,ff.)
P. Pius IX Encyclical
QUANTO CONFICIAMUR
August 10, 1863
We all know that those who are invincibly ignorant of our religion and who nevertheless lead an honest and upright life, can, under the influence of divine light and divine grace, attain to eternal life; for God who knows and sees the mind, the heart, the thoughts, and the dispositions of every man, cannot in His infinite bounty and clemency permit any one to suffer eternal punishment who is not guilty through his own fault."
(Denzinger 1677)