The Liezi (Chinese: 列子; Wade–Giles: Lieh-tzu) is a Taoist text attributed to Lie Yukou, a c. 5th century BC Hundred Schools of Thought philosopher. Although there were references to Lie's Liezi from the 3rd and 2nd centuries BC, a number of Chinese and Western scholars believe that the content of the current text was compiled around the 4th century CE by Zhang Zhan. Source: Wikipedia (en)