Lao Zi (also Lao-Tzu or Lao-Tze) was an ancient Chinese philosopher and writer. His book, Dao De Jing (or Tao Te Ching), has been in circulation for more than 2,500 years. There are many versions and more than one thousand annotations, yet most readers still find it difficult to understand, let alone apply in daily life. Thus Dao De Jing is often misunderstood and regarded as containing mystical teachings disconnected from reality. In Mysteries of Dao De Jing (Tao Te Ching) Revealed, author Dr. Guo Yong Jin dismisses many myths about this great work, including its link to Taoism (a religion founded six hundred years after Lao Zi). Shedding the mystical and surreal, he brings clarity to the teachings by drawing on Lao Zi's source of inspiration-nature. In this way, Dr. Guo distinguishes his interpretation of Dao De Jing from those before him. The typical interpretation focuses on the semantics of Lao Zi's written word; Dr. Guo, however, returns to the roots of Dao De Jing, using simple observations of nature to clarify the text. Dao De Jing lays bare the truths and realities of life and the universe. It explains the origins of life and the principles upon which the universe operates. Though much of Dao De Jing is mirrored in science and psychology, the ancient text offers an even deeper understanding. It is neither superstitious nor religious, nor is it a personal philosophy. Dao De Jing is simply wisdom in its essence.