Bibliotheca Catholicaa library of libraries
Fides et ratio

Fidelity & Editorial Policy

Bibliotheca Catholica is an independent index that intends to be faithful to the Magisterium of the Catholic Church. It points readers to the Church’s own documents, to the Fathers and Doctors, and to the great Catholic digital libraries.

Listing is not endorsement

The Isidore Index mirrors the catalogue of a third-party library, isidore.co, with its records imported as supplied. A book’s presence in the Index, in search results, or in the open data is not a recommendation, an endorsement, or a judgment that it is free of error. Our own recommendations are the hand-picked shelves: Discover & Read, Editions & Translations, and the Reading Lists.

Context notes on flagged records

Some records in the Index contain antisemitic conspiracy claims, conspiracy-theory history, or positions the Church does not accept, such as sedevacantism. We do not remove them: they remain available for historical study and research, and files stay on isidore.co. Instead, each flagged record carries a short, factual context note, this policy’s disclaimer, and a link back to this page. Flagged records are never featured on the home page, in reading lists, edition guides, or recommendations, or in the reading room, and their pages ask search engines not to index them.

Categories currently in use (54 records):

  • Antisemitic content (19 records)
  • Polemical history (conspiracy theory) (6 records)
  • Sedevacantist position (5 records)
  • Author context (24 records)

“Author context” marks other works by an author whose writing is flagged elsewhere; it is not a judgment that every such work contains the same claims.

Why we keep them, with this disclaimer

“The truth cannot impose itself except by virtue of its own truth, as it makes its entrance into the mind at once quietly and with power.”

(Vatican II, Dignitatis Humanae 1)

“The inquiry is to be free, carried on with the aid of teaching or instruction, communication and dialogue, in the course of which men explain to one another the truth they have discovered, or think they have discovered, in order thus to assist one another in the quest for truth.”

(Dignitatis Humanae 3)

Source: Second Vatican Council, Declaration on Religious Freedom, Dignitatis Humanae (7 December 1965), vatican.va.

Report a concern

If you think a record needs a context note, has the wrong one, or should not be listed, or if you hold the rights to a work and want a listing changed, write to micahwatson@bibliothecacatholica.com. Please include the book’s Index number or page link.

Privacy

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