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Tolle Lege

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

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Mater et Magistra §227 — Tolle Lege

Encyclicals (Pre-V2)

Pope John XXIII

Mater et Magistra §227

Mater et Magistra: On Christianity and Social Progress

²²⁷ It is vitally important, therefore, that Our sons learn to understand this doctrine. They must be educated to it.

Read in full at Vatican.va

Source: Mater et Magistra (Vatican.va)