One of the most controversial and reviled of Catholic documents is Pope Pius IX’s 1864 “Syllabus of Errors,” a long list of popular opinions that the Roman pontiff strongly condemned. Placing the document within its proper historical context, Pius XI was concerned by developments in such countries as the United States, where Catholic education was increasingly restricted under what were called “Blaine amendments.”
Among the “errors” Pius IX assailed in the document is the belief that “all public institutes intended for instruction… on the education of youth… should be fully subjected to the civil and political power at the pleasure of the rulers, and according to the standard of the prevalent opinions of the age.”-- More...