My first rating for this book was some sordid 2 stars, which I was forced to edit over time to a solid 3.5, thanks to the haunting ideas. I didn't quite like this book, but somehow it has earned my respect for whatever it is. 
 Evolved Caesar going telepathic and brainwashing the narrator with his meta ideas, except the Gorilla's name is Ishmael. The ideology goes something like this. 
 "The story the Takers(almost all civilized humans) have been enacting here for the past ten thousand years is not only disastrous for mankind and for the world, it's fundamentally unhealthy and unsatisfying. It's a megalomaniac's fantasy, and enacting it has given the Takers a culture riddled with greed, cruelty, mental illness, crime, and drug addiction." 
 Basically a calm version of Gorilla Grodd, more or less 
 Its one of those debates or talks that goes on stating, rather fuzzily, that something is awfully wrong with the human way of living, but gives nothing to change it. And the ones who want others to be infused with these ideas are more than happy to follow the ways of normal living inasmuch. I must confess, I was very impressed by some bits, especially the concept of evolution by the end, and that's what the 2 stars are for. And I added one more after a week of reading this book. Damn, the ideas are haunting. Edit again, I would like to add a 0.5 as well. 3.5 that is final. 
 But more or less, Author seemed like a guy who is waiting for something terrible to happen to mankind as a collective so that he could say - I told you so.