Sigmund Freud: Interpretation of Dreams "Sigmund Freud, drawing
largely from his own memories and dreams, published what he
regarded as his most important work, The Interpretation of
Dreams, in effect a record of his [four year] self-analysis. The
book was published in 1899 but Freud had the publisher mark the
date as 1900. He wanted it to usher in the 20th Century. No one
noticed. The dream book, containing ideas that would shape the
modern era, sold just 300 copies in six years."