First published in 1900, it provides a groundbreaking theory of dreams and an innovative method for interpreting them that captivates readers to this day. The book represents Freud's first major attempt to set out his theory of a dynamic unconscious, created in childhood, which operates continuously in every human mind. For Freud, dreaming is a mental activity that follows its own logic. By identifying its mechanisms, Freud also shed new light on the workings of the unconscious and its powerful role in human life.