68 How truly wonderful is the inheritance of doctrinal riches bequeathed to Us by Our predecessors, and especially by Pius XI and Pius XII! Providentially they strove to bridge, as it were, the gap between divine and human wisdom, using not the language of the textbook, but the ordinary language of contemporary speech. And what was this apostolic endeavor of theirs if not a dialogue? As for Our immediate predecessor, John XXIII, he labored with masterly assurance to bring divine truths as far as may be within the reach of the experience and understanding of modern man. Was not the Council itself given a pastoral orientation, and does it not rightly strive to inject the Christian message into the stream of modern thought, and into the language, culture, customs, and sensibilities of man as he lives in the spiritual turmoil of this modern world? Before we can convert the world-as the very condition of converting the world-we must approach it and speak to it.
Source: Ecclesiam Suam (Vatican.va)