From Pope St. John Paul II’s encyclical Fides et Ratio (1984):
I appeal also to philosophers, and to all teachers of philosophy, asking them to have the courage to recover, in the flow of an enduringly valid philosophical tradition, the range of authentic wisdom and truth—metaphysical truth included—which is proper to philosophical enquiry. They should be open to the impelling questions which arise from the word of God and they should be strong enough to shape their thought and discussion in response to that challenge. Let them always strive for truth, alert to the good which truth contains. Then they will be able to formulate the genuine ethics which humanity needs so urgently at this particular time. The Church follows the work of philosophers with interest and appreciation; and they should rest assured of her respect for the rightful autonomy of their discipline. I would want especially to encourage believers working in the philosophical field to illumine the range of human activity by the exercise of a reason which grows more penetrating and assured because of the support it receives from faith.
Finally, I cannot fail to address a word to scientists, whose research offers an ever greater knowledge of the universe as a whole and of the incredibly rich array of its component parts, animate and inanimate, with their complex atomic and molecular structures. So far has science come, especially in this century, that its achievements never cease to amaze us. In expressing my admiration and in offering encouragement to these brave pioneers of scientific research, to whom humanity owes so much of its current development, I would urge them to continue their efforts without ever abandoning the sapiential horizon within which scientific and technological achievements are wedded to the philosophical and ethical values which are the distinctive and indelible mark of the human person. Scientists are well aware that “the search for truth, even when it concerns a finite reality of the world or of man, is never-ending, but always points beyond to something higher than the immediate object of study, to the questions which give access to Mystery”.131
131 John Paul II, Address to the University of Krakow for the 600th Anniversary of the Jagiellonian University (8 June 1997), 4: L’Osservatore Romano, 9-10 June 1997, 12.
— Fides et Ratio 106