I loved this book which was written in excellent French without spelling or grammar mistake (I want to raise it because it is rare and it bothers me especially when specific topics are covered). All the topics addressed and are understandably pragmatic and precise. The author is based on real facts, proven and scientists. For those who have been bothered, see stuffed by highly religious references books Joseph Murphy, then this is the book that he need. It comes not only read but also of course the lessons dappliquer lon withdraws this book, the effort must come from you. I intend to keep it safely in my library, and reread from time to time. I have been surprised to learn that the author died in 1962, because his teachings Nont not aged.
