I agree with Jason's review and would add that this is very much the product of its time, very soul-searching, "find yourself", self-indulgent 70s. It's nostagia for some of us!
The literary style is one of experimentation, breaking into themes and patterns of prose that repeat, excerpts, poetic musings. Diverse methods are used disjoint the text and the reading of it. This gives it an expressive freedom, matching the libertarian concerns of the work and the time and place in which it was written. It could be a bit off-putting to those that have specific preferences as to how SF should be written. Space Opera it ain't. That's why I liked it so much! Good writing is not a matter of fashion or a restrictive genre style.
I think it's beautiful, but don't bother if you like a tight, explicable, neat tale with fast pacing and a big bang at the end. You won't find that here.