Fritz Perls, the originator and developer of Gestalt Therapy, gives a clear explanation in simple terms of the basic ideas underlying this method, which at the same time makes a contribution to existential philosophy. This is followed by verbatim transcripts of complete therapy sessions, with explanatory comments by Dr. Perls. Gestalt Therapy is an existential approach that combines individual work and a group setting, to work through the phony role-playing and to evoke and express the real existence of the person in the present.