The boy of twelve or thirteen is left by his father in some lonesome place, with a little fire to keep the beasts away, and there he fasts and prays, four days or more, until some spiritual visitant comes in dream, in human or animal form, to speak to him and give him power.
Campbell offers the foundational ethnographic account of the North American vision quest as an institutionalized adolescent initiation in which voluntary solitude and fasting produce a spirit-visitation that determines the seeker’s adult vocation and power.
, Primitive Mythology (The Masks of God, Volume I), 1959thesis