Dream Psychology presents Sigmund Freud's radical claim that dreams are not meaningless oddities but psychologically charged acts that reveal the unconscious. Framed as a forceful defense of Freud's scientific importance, the book argues that he transformed dream study from superstition into a rigorous method for uncovering hidden wishes, symbolic language, sexuality, and the emotional roots of mental illness. It presents him as a revolutionary thinker whose discoveries reshaped psychiatry, abnormal psychology, and modern ideas about human behavior. The book then turns to Freud's own method, beginning with the question of whether dreams are random bodily events or meaningful psychic expressions. Through free association and a famous self-analysis of a brief, puzzling dream, Freud shows how dream fragments connect to recent events, childhood memories, family tensions, debts, and buried feelings. From this he develops the distinction between manifest content and latent thoughts, explaining "dream-work" as the process that disguises one in the other. Childhood wishes, adult sexual desires, pregnancy and birth symbolism, and recurring fears all emerge as central themes, while dream symbols are shown to be drawn from folklore, myth, and everyday speech rather than fixed codes. This edition has been fully restored with modern typesetting, custom cover design.