From Pope St. John Paul II’s encyclical Fides et Ratio (1984):
The truth comes initially to the human being as a question: Does life have a meaning? Where is it going? At first sight, personal existence may seem completely meaningless. It is not necessary to turn to the philosophers of the absurd or to the provocative questioning found in the Book of Job in order to have doubts about life’s meaning. The daily experience of suffering—in one’s own life and in the lives of others—and the array of facts which seem inexplicable to reason are enough to ensure that a question as dramatic as the question of meaning cannot be evaded.26 Moreover, the first absolutely certain truth of our life, beyond the fact that we exist, is the inevitability of our death. Given this unsettling fact, the search for a full answer is inescapable. Each of us has both the desire and the duty to know the truth of our own destiny. We want to know if death will be the definitive end of our life or if there is something beyond—if it is possible to hope for an after-life or not. It is not insignificant that the death of Socrates gave philosophy one of its decisive orientations, no less decisive now than it was more than two thousand years ago. It is not by chance, then, that faced with the fact of death philosophers have again and again posed this question, together with the question of the meaning of life and immortality.
No-one can avoid this questioning, neither the philosopher nor the ordinary person. The answer we give will determine whether or not we think it possible to attain universal and absolute truth; and this is a decisive moment of the search. Every truth—if it really is truth—presents itself as universal, even if it is not the whole truth. If something is true, then it must be true for all people and at all times. Beyond this universality, however, people seek an absolute which might give to all their searching a meaning and an answer—something ultimate, which might serve as the ground of all things. In other words, they seek a final explanation, a supreme value, which refers to nothing beyond itself and which puts an end to all questioning. Hypotheses may fascinate, but they do not satisfy. Whether we admit it or not, there comes for everyone the moment when personal existence must be anchored to a truth recognized as final, a truth which confers a certitude no longer open to doubt.
Through the centuries, philosophers have sought to discover and articulate such a truth, giving rise to various systems and schools of thought. But beyond philosophical systems, people seek in different ways to shape a “philosophy” of their own—in personal convictions and experiences, in traditions of family and culture, or in journeys in search of life’s meaning under the guidance of a master. What inspires all of these is the desire to reach the certitude of truth and the certitude of its absolute value.
26 Cf. John Paul II, Apostolic Letter Salvifici Doloris (11 February 1984), 9: Acta Apostolicæ Sedis 76 (1984), 209-210.
— Fides et Ratio 26-27