The nature of communication between patient and therapist is reviewed. It is suggested that by means of his evocativeness, manner of presentation, or voice the therapist is able to stir and evolve past experiences of the patient along with their accompanying affects during the treatment sessions. Comparison is made between those therapists who can successfully evoke such reactions in their patients as opposed to those who proceed in an intellectualized, stereotyped, mechanical way. Evocativeness is a mutual experience between patient and therapist and the therapist's capacity for evocativeness is likened to the artistic communication between the artist and his audience.