Asimov obviously intended to write a second trilogy in the Foundation series, and the end of this book contains the best passages, where the story so far is atmospherically summed up, and we look ahead to possible dark developments due to the new character who has been introduced. So that part of the book is fine. The rest, I'm afraid, is pretty poor. Firstly, there seems no reason for the constant and irritating sniping between Bliss and Trevize, and secondly, the plot is self-indulgently languid, peppered with allusions that Asimov fans will pick up, but still nothing more than an over-long travelogue. Asimov, rather uncharacteristically, shoves some sex in, but even that seems to sit uneasily in the mix. I do re-read parts of this book, but I will never read it all the way through again.