Never Ending Questions is a tome in Diablo III that can drop from any Unique Monster in Set Dungeons.
It reads as follows:
I can see it now. My brothers and sisters will be drawn to these places of power, and I cannot stop it. I can only hope that some of them will prove more adept than I and see the patterns clearly before the call takes them. Perhaps they will even discover why these dungeons exist. For me it is too late. I feel the call, and I know I must heed it, regardless of the cost.