In his Syllabus of Modern Errors, Blessed Pope Pius IX condemned the following, under the heading, “III. INDIFFERENTISM, LATITUDINARIANISM”:
15. Every man is free to embrace and profess that religion which, guided by the light of reason, he shall consider true. — Allocution “Maxima quidem,” June 9, 1862; Damnatio “Multiplices inter,” June 10, 1851.
16. Man may, in the observance of any religion whatever, find the way of eternal salvation, and arrive at eternal salvation. — Encyclical “Qui pluribus,” Nov. 9, 1846.
17. Good hope at least is to be entertained of the eternal salvation of all those who are not at all in the true Church of Christ. — Encyclical “Quanto conficiamur,” Aug. 10, 1863, etc.
18. Protestantism is nothing more than another form of the same true Christian religion, in which form it is given to please God equally as in the Catholic Church. — Encyclical “Noscitis,” Dec. 8, 1849.