A healing state of mind has specific benefits for the healer, however, and for the rapport between therapist and sufferer. A British scientist has observed a particular configuration of brain rhythms in most of the spiritual healers he has tested. (England has thousands of licensed healers, and they are permitted to work in hospitals.) One anxious physician wired to the brainwave device did not show that pattern. Finally the sympathetic researcher said, "Imagine you are about to treat a patient. You have no medicine, no equipment. You have nothing to give but your compassion."