It is funny how one thing leads to another. I was 'recycling' some no longer wanted books at a local second hand bookshop and wanted to use the credit straightaway. Browsing the shelves I found three books which would complement books already on my shelf. This book in the Majipoor cycle is one of them, and another fine work from Silverberg.
You may know that the term 'pontifex' has become better know in recent times as the twitter handle of the current Pope and which is a correct use of the ancient term but nicely appropriated by Silverberg for this series.