In the tradition of the first book, this one too contains strong philosophical underpinnings. Of morals, consciousness, ethics, etc. and the various methods and tools a far future humanity in diaspora among the stars might employ in tackling its age old mysteries.
I think that the whole of the book can be described as an extensive fictional account of the age old goodness vs evil dichotomy, wherein the protagonist represents the forces of good that ultimately brings about the evil in the form of his best friend Hanuman (sort of a ying/yang counterbalance) and how best that force of good mitigates and ultimately triumphs over said evil.
Very interesting albeit a bit prolonged. Highly Recommended.