I just read "The Profession of Faith of the Savoyard Vicar" in Emile by Jean Jacques Rousseau. He's responsible for intelligent design (that annoying "who made this watch?" story), and an early "who caused the big bang? GOD did!" argument. I think this falls into your "mysterious answer" category. Positing a supernatural being doesn't really answer anything, it just moves the mystery into a new, man-made construct.