The "real" saints, being the New Testament apostles warn Christians to be on guard against wolves in sheep's clothing, and this is exactly what this book is. At first glance while you're reading this it may seem like strong Christian teaching and it quite quickly sucks you into believing what the author has to say.
My wife and I who have been Christians for over 10 years read only one chapter together and found it to be steeped in newage, quasi-mystical ancient teachings with very few actual scripture references. Any I did find seemed to be very out of context. The worst part is that this book was required reading material for a respected Bible college in our area when my wife was a student there. It is very interesting to go on the website for Renovaire (Richard Foster's new "church" group) and find that they are "Drawing from the example and practices of Jesus and of the historical Church" ANY time you see Jesus AND, big red flags should go up in your mind. Jesus said clearly I am the only way to God, "No one comes to the Father accept through me." Judging by the fact that the historical church has a very bad record of following what Jesus taught, I am not sure we should be drawing from their "example". The only example we should drawing from is that of the divine, holy and perfect Son of God, Jesus Christ!!!
This book is full of mysticism and pagan spirituality. The author is Quaker, he founded Renovare', and also wrote a Renovare' study Bible which includes the apocryphal writings. I highly recommend that anyone considering this book (or any other for that matter) do a thorogh study of the author before purchasing. The practices encouraged in this book have been leading believers to "another Jesus" for centuries. This is the same old "New Age" concepts, just wrapped in different packaging.