Catholic
The Christian knows by discerning true development from corruption across time — the identity of the idea preserved.
Hardcover $39 · Ebook $19
Hardcover includes ebook downloads (EPUB, AZW3, PDF) and 90 days of Ignaria Pro — solid ground with teachers who came before. Trusted voices guide — you interpret; never an AI pastor.
Pack of 8 (recommended): hardcover $280.80 · ebook $136.80
You buy as the facilitator. Hardcovers ship to you; share them when you gather. Share unlock links so each member gets their ebook and 90 days of study — unlocks are not extra hardcovers. Packs and the guide protect group pace — one voice, weeks of deep reading together. Members use the edition and Ignaria to keep asking the text with citations — not an AI sermon.
Hardcover pack of 8 — $280.80 Ebook pack of 8 — $136.80
Also packs of 4 and 6 at checkout.
If a facilitator or friend shared an unlock with you, redeem it on Ignaria for your ebook and study access — no purchase needed.
Already subscribe to Ignaria Pro? Buying a Member Edition pushes your next Pro charge out for those 90 days.
Complete 1878 Pickering New Edition of the Essay on the Development of Christian Doctrine — Dedication, Preface, Advertisement, Introduction, and Chapters I–XII — with Newman’s footnotes retained as chapter notes.
Three companion volumes on the same question: How does Scripture hold the Church in one faith?