Definitely an interesting read. The people that were hunting him down and in the FBI debating whether to advise this be published- even they respected him as an intellectual.
I do have one big contention with his work. Say we abandon all remnants of industrial society. Then this given society will be like, say, the Native Americans. They will be one with nature and at peace, and what have you... and will then get mowed down by the next guys who still have their industry and wish to expand. I see this as inevitable and makes his whole idea a non-starter. There is no equilibrium point without technology. Someone will develop it, and use their toys to imperialize worldwide- implement "the system".
That being said, he is of course quite right about the psychological affects of "the system". He had interesting thoughts on the whole "power process" as well. Maslow's hierarchy of needs. When our most primal needs are taken care of, we move on to the next. When we run out, we create more. He says he would rather see us working on more "real goals" instead of how we placate ourselves today. Perhaps we are evolved and created to live under much different circumstances, but I don't see any possibility of returning to pre-industrialized society, and certainly no means of maintaining it.