Human language may be conditioned by history and constricted in other ways, but the human being can still express truths which surpass the phenomenon of language. Truth can never be confined to time and culture; in history it is known, but it also reaches beyond history. To see this is to glimpse the solution of another problem: the problem of the enduring validity of the conceptual language used in Conciliar definitions. This is a question addressed in the Encyclical Letter Humani Generis. This is a complex theme to ponder, since one must reckon seriously with the meaning which words assume in different times and cultures. Nonetheless, the history of thought shows that across the range of cultures and their development certain basic concepts retain their universal epistemological value and thus retain the truth of the propositions in which they are expressed. Were this not the case, philosophy and the sciences could not communicate with each other, nor could they find a place in cultures different from those in which they were conceived and developed. The hermeneutical problem exists, to be sure; but it is not insoluble. (Papal Encyclical, Fides et Ratio, 14 September 1998).