There is such depth in the Christian Scriptures that, even if I studied them, and nothing else, from early childhood to worn-out old age, with ample time and unflagging zeal, and with greater intellectual ability than I possess, I would still each day find new treasures within them. The basic truths necessary for salvation are easily found within the Scriptures. But even when a person has accepted these truths, and is both God-fearing and righteous in his actions, there remain so many things which lie under a great veil of mystery. Through reading the Scriptures, we can pierce this veil, and find the deepest wisdom in the words which express these mysteries, and in the mysteries themselves. The oldest, the ablest, and the most eager student of Scripture, will say at the end of each day: "I have studied hard, but my studies are just beginning"
- Augustine of Hippo
(Source : Letter 137)