90:2.1

Spirit conjuring was a very precise and highly complicated procedure, comparable to present-day church rituals conducted in an ancient tongue. The human race very early sought for superhuman help, for revelation; and men believed that the shaman actually received such revelations. While the shamans utilized the great power of suggestion in their work, it was almost invariably negative suggestion; only in very recent times has the technique of positive suggestion been employed. In the early development of their profession the shamans began to specialize in such vocations as rain making, disease healing, and crime detecting. To heal diseases was not, however, the chief function of a shamanic medicine man; it was, rather, to know and to control the hazards of living.