Lao Tzu was a philosopher of ancient China, best known as the author of the Tao Te Ching. His association with the Tao Te Ching has led him to be traditionally considered the founder of philosophical Taoism. He is also revered as a deity in most religious forms of Taoist philosophy, which often refers to Lao Tzu as Taishang Laojun, or "One of the Three Pure Ones." According to Chinese traditions, Lao Tzu lived in the 6th century BC. Historians variously contend that Lao Tzu is a synthesis of multiple historical figures, that he is a mythical figure, or that he actually lived in the 5th-4th cen...