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“Take up and read.” — St. Augustine

Tolle Lege

Sources — Sacred Scripture (eBible.org), Catechism and Papal Documents (Vatican.va, Papal Encyclicals Online), Church Fathers (New Advent).

Always refer to the official texts.

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Ad Petri Cathedram §67 — Tolle Lege

Encyclicals (Pre-V2)

Pope John XXIII

Ad Petri Cathedram §67

Ad Petri Cathedram

⁶⁷ Indeed, the Catholic Church is set apart and distinguished by these three characteristics: unity of doctrine, unity of organization, unity of worship. This unity is so conspicuous that by it all men can find and recognize the Catholic Church.

Read in full at Vatican.va

Source: Ad Petri Cathedram (Vatican.va)