From Pope St. John Paul II’s encyclical Fides et Ratio (1984):
Philosophical thought is often the only ground for understanding and dialogue with those who do not share our faith. The current ferment in philosophy demands of believing philosophers an attentive and competent commitment, able to discern the expectations, the points of openness and the key issues of this historical moment. Reflecting in the light of reason and in keeping with its rules, and guided always by the deeper understanding given them by the word of God, Christian philosophers can develop a reflection which will be both comprehensible and appealing to those who do not yet grasp the full truth which divine Revelation declares. Such a ground for understanding and dialogue is all the more vital nowadays, since the most pressing issues facing humanity—ecology, peace and the co-existence of different races and cultures, for instance—may possibly find a solution if there is a clear and honest collaboration between Christians and the followers of other religions and all those who, while not sharing a religious belief, have at heart the renewal of humanity. The Second Vatican Council said as much: “For our part, the desire for such dialogue, undertaken solely out of love for the truth and with all due prudence, excludes no one, neither those who cultivate the values of the human spirit while not yet acknowledging their Source, nor those who are hostile to the Church and persecute her in various ways”.126 A philosophy in which there shines even a glimmer of the truth of Christ, the one definitive answer to humanity’s problems,127 will provide a potent underpinning for the true and planetary ethics which the world now needs.
In concluding this Encyclical Letter, my thoughts turn particularly to theologians, encouraging them to pay special attention to the philosophical implications of the word of God and to be sure to reflect in their work all the speculative and practical breadth of the science of theology. I wish to thank them for their service to the Church. The intimate bond between theological and philosophical wisdom is one of the Christian tradition’s most distinctive treasures in the exploration of revealed truth. This is why I urge them to recover and express to the full the metaphysical dimension of truth in order to enter into a demanding critical dialogue with both contemporary philosophical thought and with the philosophical tradition in all its aspects, whether consonant with the word of God or not. Let theologians always remember the words of that great master of thought and spirituality, Saint Bonaventure, who in introducing his Itinerarium Mentis in Deum invites the reader to recognize the inadequacy of “reading without repentance, knowledge without devotion, research without the impulse of wonder, prudence without the ability to surrender to joy, action divorced from religion, learning sundered from love, intelligence without humility, study unsustained by divine grace, thought without the wisdom inspired by God”.128
I am thinking too of those responsible for priestly formation, whether academic or pastoral. I encourage them to pay special attention to the philosophical preparation of those who will proclaim the Gospel to the men and women of today and, even more, of those who will devote themselves to theological research and teaching. They must make every effort to carry out their work in the light of the directives laid down by the Second Vatican Council129 and subsequent legislation, which speak clearly of the urgent and binding obligation, incumbent on all, to contribute to a genuine and profound communication of the truths of the faith. The grave responsibility to provide for the appropriate training of those charged with teaching philosophy both in seminaries and ecclesiastical faculties must not be neglected.130 Teaching in this field necessarily entails a suitable scholarly preparation, a systematic presentation of the great heritage of the Christian tradition and due discernment in the light of the current needs of the Church and the world.
126 Pastoral Constitution on the Church in the Modern World Gaudium et Spes, 92.
127 Cf. ibid., 10.
128 Prologus, 4: Opera Omnia, Florence, 1891, vol. V, 296.
129 Cf. Decree on Priestly Formation Optatam Totius, 15.
130 Cf. John Paul II, Apostolic Constitution Sapientia Christiana (15 April 1979), Arts. 67-68: Acta Apostolicæ Sedis 71 (1979), 491-492.
— Fides et Ratio 104-105