Wendy Beth Baker’s The Healing Power of Horses is devoted to the world’s greatest horsepeople, the Oglala Lakota Indians of Pine Ridge, South Dakota. She begins the book by sharing the philosophy of these great horse-loving people: “There are those who feel the sun rises and sets on the back of a horse, and no matter what obstacles life sets in their way, they never dismount.” The spirit and fortitude of the Lakota Indians inform Baker’s words as...