Rosalyn R. LaPier demonstrates that Blackfeet history is incomplete without an understanding of the Blackfeet people's relationship and mode of interaction with the "invisible reality" of the supernatural world. Religious beliefs provided the Blackfeet with continuity through privations and changing times. The stories they passed to new generations and outsiders reveal the fundamental philosophy of Blackfeet existence namely, the belief that they could alter, change, or control nature to suit their needs and that they were able to do so with the assistance of supernatural allies. The...