http://www.amazon.com/Zen-Its-History-and-Teachings/dp/0681153172

(1) Interesting from a historical perspective but doesn't it weaken much of the rest of his entire works when at the start of this book he claims, much as do the Scientologists, that vegetation thinks and feels: "Plants are telepathic" says he

(2) Osho among others claims that Zen is neither a religion nor a philosophy. What is it

(3) Is it possible they're just trying to put it over on us, that Zen is pure nonsense. As with Scientology (and arguably, almost all religion) the individual might gain a feeling of detachment if not fulfilment and happiness purely through a process of autosuggestion

In the latter connection one might also read The Varieties of Religious Experience by William James

dalehileman