Browsers in the esoterica aisles of their local bookstores will be well aware of the surfeit of so-called lost wisdom available in paperback form. The covers of these books are often decorated with illuminated crystal skulls or Stonehenge silhouetted against an especially vivid sunrise, covers so garish and ostentatious that the secret wisdom contained therein is unlikely to be mislaid again.
Which raises the question: if the original possessors of this lost wisdom were so wise how did they manage to lose their wisdom in the first place? I can only imagine they must have been antiquity's equivalent of the proverbial absent-minded professors of our own time. Imagine priests and sages well versed in the arcane knowledge of the Gods but easily distracted by flute-players and dancing maidens.
Imagine you're studying wisdom in the desert, pause for a second to locate the source of a pretty tune floating on the breeze, then return your attention to the wisdom only to discover it's been irretrievably buried by the Sands of Time while you were listening to the music. If only the ancient world had been equipped with mass-market printing presses and a group of mercenary graphic designers instead of papyrus and overworked scribes.