Hello. Here is a true book to its author. I already had the works: The Power of Now and New Earth. I would say it is the most refined of the three. He breathes as much as the other two but it is shorter (perhaps this is due to pocket size but I do not think). This does not detract from the quality and appeal of the depths of Being that is experienced during playback. The other two books are more excellent, enlightening and soothing study of the functioning of the ego and thought among others. The art of inner calm is more direct in itself and is clearly essential as do the Hindu scriptures, Buddhist, Zen etc ... but with a language and a vision understandable for Western we are. I also said that this is a non-religious book. Happy reading and that peace is revealed.