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66 With regard to the intellectus fidei, a prime consideration must be that divine Truth lproposed to us in the Sacred Scriptures and rightly interpreted by the Church's teachingr 89 enjoys an innate intelligibility, so logically consistent that it stands as an authentic body of knowledge. The intellectus fidei expounds this truth, not only in grasping the logical and conceptual structure of the propositions in which the Church's teaching is framed, but also, indeed primarily, in bringing to light the salvific meaning of these propositions for the individual and for humanity. From the sum of these propositions, the believer comes to know the history of salvation, which culminates in the person of Jesus Christ and in his Paschal Mystery. Believers then share in this mystery by their assent of faith.
For its part, dogmatic theology must be able to articulate the universal meaning of the mystery of the One and Triune God and of the economy of salvation, both as a narrative and, above all, in the form of argument. It must do so, in other words, through concepts formulated in a critical and universally communicable way. Without philosophy's contribution, it would in fact be impossible to discuss theological issues such as, for example, the use of language to speak about God, the personal relations within the Trinity, God's creative activity in the world, the relationship between God and man, or Christ's identity as true God and true man. This is no less true of the different themes of moral theology, which employ concepts such as the moral law, conscience, freedom, personal responsibility and guilt, which are in part defined by philosophical ethics.
It is necessary therefore that the mind of the believer acquire a natural, consistent and true knowledge of created realitiesmthe world and man himselfmwhich are also the object of divine Revelation. Still more, reason must be able to articulate this knowledge in concept and argument. Speculative dogmatic theology thus presupposes and implies a philosophy of the human being, the world and, more radically, of being, which has objective truth as its foundation.
89 Saint Thomas Aquinas, Summa Theologiae, II-II 5,3 ad 2.
67 With its specific character as a discipline charged with giving an account of faith (cf. 1P 3,15), the concern of fundamental theology will be to justify and expound the relationship between faith and philosophical thought. Recalling the teaching of Saint Paul (cf. Rm 1,19-20), the First Vatican Council pointed to the existence of truths which are naturally, and thus philosophically, knowable; and an acceptance of God's Revelation necessarily presupposes knowledge of these truths. In studying Revelation and its credibility, as well as the corresponding act of faith, fundamental theology should show how, in the light of the knowledge conferred by faith, there emerge certain truths which reason, from its own independent enquiry, already perceives. Revelation endows these truths with their fullest meaning, directing them towards the richness of the revealed mystery in which they find their ultimate purpose. Consider, for example, the natural knowledge of God, the possibility of distinguishing divine Revelation from other phenomena or the recognition of its credibility, the capacity of human language to speak in a true and meaningful way even of things which transcend all human experience. From all these truths, the mind is led to acknowledge the existence of a truly propaedeutic path to faith, one which can lead to the acceptance of Revelation without in any way compromising the principles and autonomy of the mind itself.90
Similarly, fundamental theology should demonstrate the profound compatibility that exists between faith and its need to find expression by way of human reason fully free to give its assent. Faith will thus be able lto show fully the path to reason in a sincere search for the truth. Although faith, a gift of God, is not based on reason, it can certainly not dispense with it. At the same time, it becomes apparent that reason needs to be reinforced by faith, in order to discover horizons it cannot reach on its ownr.91
90 "The search for the conditions in which man on his own initiative asks the first basic questions about the meaning of life, the purpose he wishes to give it and what awaits him after death constitutes the necessary preamble to fundamental theology, so that today too, faith can fully show the way to reason in a sincere search for the truth": John Paul II, Letter to Participants in the International Congress of Fundamental Theology on the 125th Anniversary of "Dei Filius" (30 September 1995), 4: L'Osservatore Romano, 3 October 1995, 8.
68 Moral theology has perhaps an even greater need of philosophy's contribution. In the New Testament, human life is much less governed by prescriptions than in the Old Testament. Life in the Spirit leads believers to a freedom and responsibility which surpass the Law. Yet the Gospel and the Apostolic writings still set forth both general principles of Christian conduct and specific teachings and precepts. In order to apply these to the particular circumstances of individual and communal life, Christians must be able fully to engage their conscience and the power of their reason. In other words, moral theology requires a sound philosophical vision of human nature and society, as well as of the general principles of ethical decision-making.
69 It might be objected that the theologian should nowadays rely less on philosophy than on the help of other kinds of human knowledge, such as history and above all the sciences, the extraordinary advances of which in recent times stir such admiration. Others, more alert to the link between faith and culture, claim that theology should look more to the wisdom contained in peoples' traditions than to a philosophy of Greek and Eurocentric provenance. Others still, prompted by a mistaken notion of cultural pluralism, simply deny the universal value of the Church's philosophical heritage.
There is some truth in these claims which are acknowledged in the teaching of the Council.92 Reference to the sciences is often helpful, allowing as it does a more thorough knowledge of the subject under study; but it should not mean the rejection of a typically philosophical and critical thinking which is concerned with the universal. Indeed, this kind of thinking is required for a fruitful exchange between cultures. What I wish to emphasize is the duty to go beyond the particular and concrete, lest the prime task of demonstrating the universality of faith's content be abandoned. Nor should it be forgotten that the specific contribution of philosophical enquiry enables us to discern in different world-views and different cultures lnot what people think but what the objective truth isr.93 It is not an array of human opinions but truth alone which can be of help to theology.
92 Cf. Second Vatican Ecumenical Council, Pastoral Constitution on the Church in the Modern World Gaudium et Spes, GS 15; Decree on the Church's Missionary Activity Ad Gentes, AGD 22.
93 Saint Thomas Aquinas, De Caelo, 1, 22.
70 Because of its implications for both philosophy and theology, the question of the relationship with cultures calls for particular attention, which cannot however claim to be exhaustive. From the time the Gospel was first preached, the Church has known the process of encounter and engagement with cultures. Christ's mandate to his disciples to go out everywhere, leven to the ends of the earth (Ac 1,8), in order to pass on the truth which he had revealed, led the Christian community to recognize from the first the universality of its message and the difficulties created by cultural differences. A passage of Saint Paul's letter to the Christians of Ephesus helps us to understand how the early community responded to the problem. The Apostle writes: Now in Christ Jesus you who once were far off have been brought near in the blood of Christ. For he is our peace, who has made us both one, and has broken down the wall of hostility (Ep 2,13-14).
In the light of this text, we reflect further to see how the Gentiles were transformed once they had embraced the faith. With the richness of the salvation wrought by Christ, the walls separating the different cultures collapsed. God's promise in Christ now became a universal offer: no longer limited to one particular people, its language and its customs, but extended to all as a heritage from which each might freely draw. From their different locations and traditions all are called in Christ to share in the unity of the family of God's children. It is Christ who enables the two peoples to become loner. Those who were lfar offr have come lnearr, thanks to the newness brought by the Paschal Mystery. Jesus destroys the walls of division and creates unity in a new and unsurpassed way through our sharing in his mystery. This unity is so deep that the Church can say with Saint Paul: You are no longer strangers and sojourners, but you are saints and members of the household of God (Ep 2,19).
This simple statement contains a great truth: faith's encounter with different cultures has created something new. When they are deeply rooted in experience, cultures show forth the human being's characteristic openness to the universal and the transcendent. Therefore they offer different paths to the truth, which assuredly serve men and women well in revealing values which can make their life ever more human.94 Insofar as cultures appeal to the values of older traditions, they point "implicitly but authentically" to the manifestation of God in nature, as we saw earlier in considering the Wisdom literature and the teaching of Saint Paul.
94 Cf. Second Vatican Ecumenical Council, Pastoral Constitution on the Church in the Modern World Gaudium et Spes, GS 53-59.
71 Inseparable as they are from people and their history, cultures share the dynamics which the human experience of life reveals. They change and advance because people meet in new ways and share with each other their ways of life. Cultures are fed by the communication of values, and they survive and flourish insofar as they remain open to assimilating new experiences. How are we to explain these dynamics? All people are part of a culture, depend upon it and shape it. Human beings are both child and parent of the culture in which they are immersed. To everything they do, they bring something which sets them apart from the rest of creation: their unfailing openness to mystery and their boundless desire for knowledge. Lying deep in every culture, there appears this impulse towards a fulfilment. We may say, then, that culture itself has an intrinsic capacity to receive divine Revelation.
Cultural context permeates the living of Christian faith, which contributes in turn little by little to shaping that context. To every culture Christians bring the unchanging truth of God, which he reveals in the history and culture of a people. Time and again, therefore, in the course of the centuries we have seen repeated the event witnessed by the pilgrims in Jerusalem on the day of Pentecost. Hearing the Apostles, they asked one another: Are not all these who are speaking Galileans? And how is it that we hear, each of us in his own native language? Parthians and Medes and Elamites and residents of Mesopotamia, Judea and Cappadocia, Pontus and Asia, Phrygia and Pamphylia, Egypt and the parts of Libya belonging to Cyrene, and visitors from Rome, both Jews and proselytes, Cretans and Arabians, we hear them telling in our own tongues the mighty works of God (Ac 2,7-11). While it demands of all who hear it the adherence of faith, the proclamation of the Gospel in different cultures allows people to preserve their own cultural identity. This in no way creates division, because the community of the baptized is marked by a universality which can embrace every culture and help to foster whatever is implicit in them to the point where it will be fully explicit in the light of truth.
This means that no one culture can ever become the criterion of judgment, much less the ultimate criterion of truth with regard to God's Revelation. The Gospel is not opposed to any culture, as if in engaging a culture the Gospel would seek to strip it of its native riches and force it to adopt forms which are alien to it. On the contrary, the message which believers bring to the world and to cultures is a genuine liberation from all the disorders caused by sin and is, at the same time, a call to the fullness of truth. Cultures are not only not diminished by this encounter; rather, they are prompted to open themselves to the newness of the Gospel's truth and to be stirred by this truth to develop in new ways.
72 In preaching the Gospel, Christianity first encountered Greek philosophy; but this does not mean at all that other approaches are precluded. Today, as the Gospel gradually comes into contact with cultural worlds which once lay beyond Christian influence, there are new tasks of inculturation, which mean that our generation faces problems not unlike those faced by the Church in the first centuries.
My thoughts turn immediately to the lands of the East, so rich in religious and philosophical traditions of great antiquity. Among these lands, India has a special place. A great spiritual impulse leads Indian thought to seek an experience which would liberate the spirit from the shackles of time and space and would therefore acquire absolute value. The dynamic of this quest for liberation provides the context for great metaphysical systems.
In India particularly, it is the duty of Christians now to draw from this rich heritage the elements compatible with their faith, in order to enrich Christian thought. In this work of discernment, which finds its inspiration in the Council's Declaration Nostra Aetate, certain criteria will have to be kept in mind. The first of these is the universality of the human spirit, whose basic needs are the same in the most disparate cultures. The second, which derives from the first, is this: in engaging great cultures for the first time, the Church cannot abandon what she has gained from her inculturation in the world of Greco-Latin thought. To reject this heritage would be to deny the providential plan of God who guides his Church down the paths of time and history. This criterion is valid for the Church in every age, even for the Church of the future, who will judge herself enriched by all that comes from today's engagement with Eastern cultures and will find in this inheritance fresh cues for fruitful dialogue with the cultures which will emerge as humanity moves into the future. Thirdly, care will need to be taken lest, contrary to the very nature of the human spirit, the legitimate defense of the uniqueness and originality of Indian thought be confused with the idea that a particular cultural tradition should remain closed in its difference and affirm itself by opposing other traditions.
What has been said here of India is no less true for the heritage of the great cultures of China, Japan and the other countries of Asia, as also for the riches of the traditional cultures of Africa, which are for the most part orally transmitted.
73 In the light of these considerations, the relationship between theology and philosophy is best construed as a circle. Theology's source and starting-point must always be the word of God revealed in history, while its final goal will be an understanding of that word which increases with each passing generation. Yet, since God's word is Truth (cf. Jn 17,17), the human search for truthmphilosophy, pursued in keeping with its own rulesmcan only help to understand God's word better. It is not just a question of theological discourse using this or that concept or element of a philosophical construct; what matters most is that the believer's reason use its powers of reflection in the search for truth which moves from the word of God towards a better understanding of it. It is as if, moving between the twin poles of God's word and a better understanding of it, reason is offered guidance and is warned against paths which would lead it to stray from revealed Truth and to stray in the end from the truth pure and simple. Instead, reason is stirred to explore paths which of itself it would not even have suspected it could take. This circular relationship with the word of God leaves philosophy enriched, because reason discovers new and unsuspected horizons.
74 The fruitfulness of this relationship is confirmed by the experience of great Christian theologians who also distinguished themselves as great philosophers, bequeathing to us writings of such high speculative value as to warrant comparison with the masters of ancient philosophy. This is true of both the Fathers of the Church, among whom at least Saint Gregory of Nazianzus and Saint Augustine should be mentioned, and the Medieval Doctors with the great triad of Saint Anselm, Saint Bonaventure and Saint Thomas Aquinas. We see the same fruitful relationship between philosophy and the word of God in the courageous research pursued by more recent thinkers, among whom I gladly mention, in a Western context, figures such as John Henry Newman, Antonio Rosmini, Jacques Maritain, Étienne Gilson and Edith Stein and, in an Eastern context, eminent scholars such as Vladimir S. Soloviev, Pavel A. Florensky, Petr Chaadaev and Vladimir N. Lossky. Obviously other names could be cited; and in referring to these I intend not to endorse every aspect of their thought, but simply to offer significant examples of a process of philosophical enquiry which was enriched by engaging the data of faith. One thing is certain: attention to the spiritual journey of these masters can only give greater momentum to both the search for truth and the effort to apply the results of that search to the service of humanity. It is to be hoped that now and in the future there will be those who continue to cultivate this great philosophical and theological tradition for the good of both the Church and humanity.
75 As appears from this brief sketch of the history of the relationship between faith and philosophy, one can distinguish different stances of philosophy with regard to Christian faith. First, there is a philosophy completely independent of the Gospel's Revelation: this is the stance adopted by philosophy as it took shape in history before the birth of the Redeemer and later in regions as yet untouched by the Gospel. We see here philosophy's valid aspiration to be an autonomous enterprise, obeying its own rules and employing the powers of reason alone. Although seriously handicapped by the inherent weakness of human reason, this aspiration should be supported and strengthened. As a search for truth within the natural order, the enterprise of philosophy is always openmat least implicitlymto the supernatural.
Moreover, the demand for a valid autonomy of thought should be respected even when theological discourse makes use of philosophical concepts and arguments. Indeed, to argue according to rigorous rational criteria is to guarantee that the results attained are universally valid. This also confirms the principle that grace does not destroy nature but perfects it: the assent of faith, engaging the intellect and will, does not destroy but perfects the free will of each believer who deep within welcomes what has been revealed.
It is clear that this legitimate approach is rejected by the theory of so-called lseparater philosophy, pursued by some modern philosophers. This theory claims for philosophy not only a valid autonomy, but a self-sufficiency of thought which is patently invalid. In refusing the truth offered by divine Revelation, philosophy only does itself damage, since this is to preclude access to a deeper knowledge of truth.
76 A second stance adopted by philosophy is often designated as Christian philosophy. In itself, the term is valid, but it should not be misunderstood: it in no way intends to suggest that there is an official philosophy of the Church, since the faith as such is not a philosophy. The term seeks rather to indicate a Christian way of philosophizing, a philosophical speculation conceived in dynamic union with faith. It does not therefore refer simply to a philosophy developed by Christian philosophers who have striven in their research not to contradict the faith. The term Christian philosophy includes those important developments of philosophical thinking which would not have happened without the direct or indirect contribution of Christian faith.
Christian philosophy therefore has two aspects. The first is subjective, in the sense that faith purifies reason. As a theological virtue, faith liberates reason from presumption, the typical temptation of the philosopher. Saint Paul, the Fathers of the Church and, closer to our own time, philosophers such as Pascal and Kierkegaard reproached such presumption. The philosopher who learns humility will also find courage to tackle questions which are difficult to resolve if the data of Revelation are ignoredmfor example, the problem of evil and suffering, the personal nature of God and the question of the meaning of life or, more directly, the radical metaphysical question, lWhy is there something rather than nothing?r.
The second aspect of Christian philosophy is objective, in the sense that it concerns content. Revelation clearly proposes certain truths which might never have been discovered by reason unaided, although they are not of themselves inaccessible to reason. Among these truths is the notion of a free and personal God who is the Creator of the world, a truth which has been so crucial for the development of philosophical thinking, especially the philosophy of being. There is also the reality of sin, as it appears in the light of faith, which helps to shape an adequate philosophical formulation of the problem of evil. The notion of the person as a spiritual being is another of faith's specific contributions: the Christian proclamation of human dignity, equality and freedom has undoubtedly influenced modern philosophical thought. In more recent times, there has been the discovery that history as eventmso central to Christian Revelationmis important for philosophy as well. It is no accident that this has become pivotal for a philosophy of history which stakes its claim as a new chapter in the human search for truth.
Among the objective elements of Christian philosophy we might also place the need to explore the rationality of certain truths expressed in Sacred Scripture, such as the possibility of man's supernatural vocation and original sin itself. These are tasks which challenge reason to recognize that there is something true and rational lying far beyond the straits within which it would normally be confined. These questions in fact broaden reason's scope for action.
In speculating on these questions, philosophers have not become theologians, since they have not sought to understand and expound the truths of faith on the basis of Revelation. They have continued working on their own terrain and with their own purely rational method, yet extending their research to new aspects of truth. It could be said that a good part of modern and contemporary philosophy would not exist without this stimulus of the word of God. This conclusion retains all its relevance, despite the disappointing fact that many thinkers in recent centuries have abandoned Christian orthodoxy.
77 Philosophy presents another stance worth noting when theology itself calls upon it. Theology in fact has always needed and still needs philosophy's contribution. As a work of critical reason in the light of faith, theology presupposes and requires in all its research a reason formed and educated to concept and argument. Moreover, theology needs philosophy as a partner in dialogue in order to confirm the intelligibility and universal truth of its claims. It was not by accident that the Fathers of the Church and the Medieval theologians adopted non-Christian philosophies. This historical fact confirms the value of philosophy's autonomy, which remains unimpaired when theology calls upon it; but it shows as well the profound transformations which philosophy itself must undergo.
It was because of its noble and indispensable contribution that, from the Patristic period onwards, philosophy was called the ancilla theologiae. The title was not intended to indicate philosophy's servile submission or purely functional role with regard to theology. Rather, it was used in the sense in which Aristotle had spoken of the experimental sciences as lancillaryr to lprima philosophiar. The term can scarcely be used today, given the principle of autonomy to which we have referred, but it has served throughout history to indicate the necessity of the link between the two sciences and the impossibility of their separation.
Were theologians to refuse the help of philosophy, they would run the risk of doing philosophy unwittingly and locking themselves within thought-structures poorly adapted to the understanding of faith. Were philosophers, for their part, to shun theology completely, they would be forced to master on their own the contents of Christian faith, as has been the case with some modern philosophers. Either way, the grounding principles of autonomy which every science rightly wants guaranteed would be seriously threatened.
When it adopts this stance, philosophy, like theology, comes more directly under the authority of the Magisterium and its discernment, because of the implications it has for the understanding of Revelation, as I have already explained. The truths of faith make certain demands which philosophy must respect whenever it engages theology.
78 It should be clear in the light of these reflections why the Magisterium has repeatedly acclaimed the merits of Saint Thomas' thought and made him the guide and model for theological studies. This has not been in order to take a position on properly philosophical questions nor to demand adherence to particular theses. The Magisterium's intention has always been to show how Saint Thomas is an authentic model for all who seek the truth. In his thinking, the demands of reason and the power of faith found the most elevated synthesis ever attained by human thought, for he could defend the radical newness introduced by Revelation without ever demeaning the venture proper to reason.
79 Developing further what the Magisterium before me has taught, I intend in this final section to point out certain requirements which theologymand more fundamentally still, the word of God itselfmmakes today of philosophical thinking and contemporary philosophies. As I have already noted, philosophy must obey its own rules and be based upon its own principles; truth, however, can only be one. The content of Revelation can never debase the discoveries and legitimate autonomy of reason. Yet, conscious that it cannot set itself up as an absolute and exclusive value, reason on its part must never lose its capacity to question and to be questioned. By virtue of the splendour emanating from subsistent Being itself, revealed truth offers the fullness of light and will therefore illumine the path of philosophical enquiry. In short, Christian Revelation becomes the true point of encounter and engagement between philosophical and theological thinking in their reciprocal relationship. It is to be hoped therefore that theologians and philosophers will let themselves be guided by the authority of truth alone so that there will emerge a philosophy consonant with the word of God. Such a philosophy will be a place where Christian faith and human cultures may meet, a point of understanding between believer and non-believer. It will help lead believers to a stronger conviction that faith grows deeper and more authentic when it is wedded to thought and does not reject it. It is again the Fathers who teach us this: lTo believe is nothing other than to think with assent... Believers are also thinkers: in believing, they think and in thinking, they believe... If faith does not think, it is nothingr.95 And again: lIf there is no assent, there is no faith, for without assent one does not really believer.96
95 Saint Augustine, De Praedestinatione Sanctorum, 2, 5: PL 44, 963.
96 Idem, De Fide, Spe et Caritate, 7: CCL 64, 61.
80 In Sacred Scripture are found elements, both implicit and explicit, which allow a vision of the human being and the world which has exceptional philosophical density. Christians have come to an ever deeper awareness of the wealth to be found in the sacred text. It is there that we learn that what we experience is not absolute: it is neither uncreated nor self-generating. God alone is the Absolute. From the Bible there emerges also a vision of man as imago Dei.This vision offers indications regarding man's life, his freedom and the immortality of the human spirit. Since the created world is not self-sufficient, every illusion of autonomy which would deny the essential dependence on God of every creaturemthe human being includedmleads to dramatic situations which subvert the rational search for the harmony and the meaning of human life.
The problem of moral evilmthe most tragic of evil's formsmis also addressed in the Bible, which tells us that such evil stems not from any material deficiency, but is a wound inflicted by the disordered exercise of human freedom. In the end, the word of God poses the problem of the meaning of life and proffers its response in directing the human being to Jesus Christ, the Incarnate Word of God, who is the perfect realization of human existence. A reading of the sacred text would reveal other aspects of this problem; but what emerges clearly is the rejection of all forms of relativism, materialism and pantheism.
The fundamental conviction of the lphilosophyr found in the Bible is that the world and human life do have a meaning and look towards their fulfilment, which comes in Jesus Christ. The mystery of the Incarnation will always remain the central point of reference for an understanding of the enigma of human existence, the created world and God himself. The challenge of this mystery pushes philosophy to its limits, as reason is summoned to make its own a logic which brings down the walls within which it risks being confined. Yet only at this point does the meaning of life reach its defining moment. The intimate essence of God and of the human being become intelligible: in the mystery of the Incarnate Word, human nature and divine nature are safeguarded in all their autonomy, and at the same time the unique bond which sets them together in mutuality without confusion of any kind is revealed.97
97 Cf. Ecumenical Council of Chalcedon, Symbolum, Definitio: DS 302.
81 One of the most significant aspects of our current situation, it should be noted, is the lcrisis of meaningr. Perspectives on life and the world, often of a scientific temper, have so proliferated that we face an increasing fragmentation of knowledge. This makes the search for meaning difficult and often fruitless. Indeed, still more dramatically, in this maelstrom of data and facts in which we live and which seem to comprise the very fabric of life, many people wonder whether it still makes sense to ask about meaning. The array of theories which vie to give an answer, and the different ways of viewing and of interpreting the world and human life, serve only to aggravate this radical doubt, which can easily lead to scepticism, indifference or to various forms of nihilism.
In consequence, the human spirit is often invaded by a kind of ambiguous thinking which leads it to an ever deepening introversion, locked within the confines of its own immanence without reference of any kind to the transcendent. A philosophy which no longer asks the question of the meaning of life would be in grave danger of reducing reason to merely accessory functions, with no real passion for the search for truth.
To be consonant with the word of God, philosophy needs first of all to recover its sapiential dimension as a search for the ultimate and overarching meaning of life. This first requirement is in fact most helpful in stimulating philosophy to conform to its proper nature. In doing so, it will be not only the decisive critical factor which determines the foundations and limits of the different fields of scientific learning, but will also take its place as the ultimate framework of the unity of human knowledge and action, leading them to converge towards a final goal and meaning. This sapiential dimension is all the more necessary today, because the immense expansion of humanity's technical capability demands a renewed and sharpened sense of ultimate values. If this technology is not ordered to something greater than a merely utilitarian end, then it could soon prove inhuman and even become potential destroyer of the human race.98
The word of God reveals the final destiny of men and women and provides a unifying explanation of all that they do in the world. This is why it invites philosophy to engage in the search for the natural foundation of this meaning, which corresponds to the religious impulse innate in every person. A philosophy denying the possibility of an ultimate and overarching meaning would be not only ill-adapted to its task, but false.
98 Cf. John Paul II, Encyclical Letter Redemptor Hominis (4 March 1979), RH 15: AAS 71 (1979), 286-289.
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