There are as many authors as there are forms of shamanism, and as many points of view on the subject as there are authors. The fact that there is no consensus on the definition of the term shamanism is probably neither accidental nor much of a disadvantage. Is not a certain amount of vagueness appropriate to a phenomenon marked by so much diversity and vitality? For that reason, would it not be more profitable to focus the investigation of the term on the ultimate limits of its applicability? Primitive, shamanism continues to be reborn. Rooted in nature, it has blossomed in great industrial cities. Animistic, it has enriched the popular foundation of the great religions without modeling its own practices on them. Instead, shamanism has sometimes manifested itself in grand recurring rituals that celebrate ethnic identity; at other times, it has been an instrument used by private individuals to channel the course of events in a direction favorable to them or, more often, to make sure that their course is not unfavorable. To someone suffering from a psychic burden, shamanism can represent a priceless instrument that will offer relief, or help in being reassimilated into the community. For the expert practitioner, shamanism can be a means to personal advancement. Even when scorned by all and, in some cases, combated, shamanism has found a way to adapt itself everywhere.