I believe that any review of this work should be taken in context with the life that the author has lead, in living such a program day to day. One must practice what you preach. In fact, there is a large disconnect between the teachings of Satchidananda and his practices. I would urge all to read demiurge's review, as listed
Swami Satchidananda's book on the Sutras is one of the best for digging into the background and foundations of the Sutras, and his commentary, unlike Iyengar's and most other eastern commentaries, is clear, simple and easy to understand. Yet I finished the book still feeling that I did not fully grasp it. Swami Satchidananda is clearly in touch with the truth that he is illuminating with this book, and it's also clear from the powerful tone of authority with which he writes that he has reached the state of awaking which is the end purpose of the Sutras, but it seems too immersed in the history and culture of Hinduism to be fully appreciated and grasped by a westerm mind conditioned by concepts, ideas and images that are vastly different from the eastern traditions. So the book does not have a deep and profound illuminating impact as has McAfee's book on the sutras - "Beyond the Siddhis". But it is rich in historical information and its tone is true to the purpose of the Sutras. I would recommend it for for all aspiring yogis.