I can literally say this book saved my life. It gave me healthy mind and body, when I was suffering physically n emotionally for yrs and no medications were working on me.. It is the book of the main teachings of Falun Dafa. It's main purpose is to become a morally better person by striving to live by truthfulness compassion and forbearance on daily basis, and provides convincing reasons to follow these three things. This book has profound teachings which are not found anywhere else. Answers all your questions in science, philosophy, spirituality, god, human body etc. Good health is just an outcome of this practice. The main purpose of the teachings is to rise from the human level and go back to your original true self.