The Duke of Zhou´s catalogue of dreams is the oldest known text on the interpretation of dreams. Being 3100 years old, it´s principles and advice on the meaning and interpretation of dream images yield as valid results and council as in it´s own day. By studying the meaning of the different images, the reader not only is able to gain valuable insight on the meaning of his dreams, but also can deduce the basic patterns and principles of the "Language of Dreams" itself.

Dan, Duke Wen of Zhou was a member of the royal family of the Zhou dynasty. He lived in the 11th century BC. His principles and methods are rooted in Daoist ideas. The Duke of Zhou is being considered as the "God of Dreams".