Herbert said that from the beginning, he wanted the story to have many levels to it, one of which was exploring politics, culture, religion, and other aspects of social science. He sure did that, and it seems to me that as the saga went on, there was practically more allegory than story. By Heretics and Chapterhouse, we were deep into the exploration of how a person becomes a myth, and ultimately the basis of a religion, which he started with God Emperor.