Fritz Perls, M.D. (Friedrich Salomon Perls, 1893-1970) was a psychiatrist and psychotherapist, and founder of Gestalt therapy. He was one of the masters of dream work in the twentieth century. He taught his students that every aspect of a dream represents the dreamer. In his workshops, he asked dreamers to talk to dream symbols to find out more about them. Perls introduced the empty chair technique for dreamers. The subject sits in one chair and imagines that a person he or she wants to talk to is sitting there in the empty chair. It gives the person a chance to address any unfinished business. An empty chair dialogue may bring up long buried, painful memories, giving them a chance to be aired in a non-judgmental, safe, and loving environment. This technique has brought peace of mind to many people.