“But I warn you,” he said, “there’s a danger in this. I don’t possess the ultimate answers. I can’t tell you who made the world or why man exists. I can’t tell you why we exist. I can only tell you more about us than anyone else has told you so far. I can show you Those Who Must Be Kept and tell you what I know of them. I can tell you why I think I have managed to survive for so long. This knowledge may change you somewhat. That’s all knowledge ever really does, I suppose …”