Editing Index Librorum Prohibitorum (section)

===Changing judgments===
The content of the Index Librorum Prohibitorum saw deletions as well as additions over the centuries. Writings by [[Antonio Rosmini-Serbati]] were placed on the Index in 1849 but were removed by 1855, and [[Pope John Paul II]] mentioned Rosmini's work as a significant example of "a process of philosophical enquiry which was enriched by engaging the data of faith".<ref>[https://www.vatican.va/holy_father/john_paul_ii/encyclicals/documents/hf_jp-ii_enc_14091998_fides-et-ratio_en.html Encyclical ''Fides et raptio''], 74</ref> The 1758 edition of the Index removed the general prohibition of works advocating [[heliocentrism]] as a fact rather than a hypothesis.<ref>McMullin, Ernan, ed. The Church and Galileo. Notre Dame, IN: University of Notre Dame Press. 2005. {{ISBN|0-268-03483-4}}. pp. 307, 347</ref>

Some of the scientific theories contained in works in early editions of the ''Index'' have long been taught at [[Catholic Universities|Catholic universities]]. For example, the general prohibition of books advocating heliocentrism was removed from the ''Index'' in 1758, but two [[Franciscan]] mathematicians had published an edition of [[Isaac Newton]]'s {{lang|la|[[Philosophiæ Naturalis Principia Mathematica|Principia Mathematica]]}} (1687) in 1742, with commentaries and a preface stating that the work assumed heliocentrism and could not be explained without it.<ref>John L.Heilbron, ''Censorship of Astronomy in Italy after Galileo'' (in McMullin, Ernan ed., ''The Church and Galileo'', University of Notre Dame Press, Notre Dame, 2005, p. 307, IN. {{ISBN|0-268-03483-4}})</ref>