Fides et Ratio §17

¹⁷ There is thus no reason for competition of any kind between reason and faith: each contains the other, and each has its own scope for action. Again the Book of Proverbs points in this direction when it exclaims: “It is the glory of God to conceal things, but the glory of kings is to search things out” ( Prov 25:2). In their respective worlds, God and the human being are set within a unique relationship. In God there lies the origin of all things, in him is found the fullness of the mystery, and in this his glory consists; to men and women there falls the task of exploring truth with their reason, and in this their nobility consists. The Psalmist adds one final piece to this mosaic when he says in prayer: “How deep to me are your thoughts, O God! How vast is the sum of them! If I try to count them, they are more than the sand. If I come to the end, I am still with you” (139:17-18). The desire for knowledge is so great and it works in such a way that the human heart, despite its experience of insurmountable limitation, yearns for the infinite riches which lie beyond, knowing that there is to be found the satisfying answer to every question as yet unanswered.