Dreaming

Dreams are, according to some psychologists (most famously, Sigmund Freud), rich in symbolism and offer a window into the unconscious mind. Interpretation of dreams is a regular part of psychoanalysis. It is said that one may control the course and content of dreams by a technique called lucid dreaming. However, this could distract one from the dream-matter provided by the unconscious mind.

Most mainstream academic psychologists do not believe that dreams have a coherent meaning. Carl Jung's view of dreams was more precise than this: that dreams have meanings, but their meanings are idiosyncratic, complicated, and not susceptible to more than vague, uncertain, and sometimes superficial interpretations. In particular, interpretation needs to be based on the thoughts of the individual dreamer, and not on any formula.

The art of interpreting dreams from a superstitious, rather than psychological, point of view is known as oneiromancy.

A dream is also a long-term hope, e.g. in I have a dream. In advertising lotteries it is pointed out that one's dream(s) can come true.

The term is also used to ridicule someone who has hopes for something unlikely, or mistakenly believes something. This usage is especially associated with the term "pipe dream" which literally refers to a fantasy induced by opium.