The Interpretation of Dreams is a groundbreaking work in psychology in which Sigmund Freud introduces his theory that dreams are meaningful expressions of the unconscious mind. Published in 1899, the book argues that dreams are not random, but rather reveal hidden desires, fears, and unresolved conflicts.

Freud explains how dreams use symbols and disguised imagery to express thoughts that the conscious mind cannot easily accept. He introduces key concepts such as the unconscious, wish fulfillment, and the distinction between the manifest content (what we remember) and the latent content (the hidden meaning of dreams).

Using detailed case studies, including analyses of his own dreams, Freud demonstrates how interpreting dreams can provide insight into a person’s inner psychological life.