I may have to get his stuff on audio books. Reading is not something I am willing to devote time to. Without question Watts is the best I have listened to so far in describing these concepts and he did it far better than Eckhart Tolle in my opinion. I also liked how he talked about mystical experiences and cosmic consciousness. Not to mention his explaining of the difference between Eastern and Western philosophy or religions. Those being the West is more concerned with behavior, faith and doctrine where as the East seem to be more about helping a state of mind without resorting to a method of thought reform.
If you guys are interested you may want to check out a Brother Edward Salisbury and Todd Murphy who are both on Youtube and give it a think.