The Interpretation of Dreams is a book by Sigmund
Freud. The first edition was first published in German in November 1899 as
Die Traumdeutung (though post-dated as 1900 by the publisher). The
publication inaugurated the theory of Freudian dream analysis, which activity
Freud famously described as “the royal road to the understanding of unconscious
— Excerpted from Wikipedia, the free encyclopedia.