I guess I am one of the last ones to the Leibowitz party. This shows my limits regarding classic sci-fi, though this book clearly extends the boundaries of that classic age and its readership is rather wider than that. 
 Anyway, I enjoyed it a lot, approvingly admire the three-part structure, and thought that at least the first two parts moved to intense conclusions that ended just in the right place, without having to reveal everything. The last part sagged a bit, even though it was already the shortest, and in any case, Miller backed off of any of the imaginative possibilities of the second enlightenment, fourth millennium technology. 
 Once again, the audio-reading of this book was phenomenal. The command of voices was very dynamic, and was great for bringing out the humor of the book, which at least some reviewers have commented was not as humorous as advertised. I disagree, but the audio version might be funnier than the usual silent reading monologue.