"The Soul of the Indian" by Charles Alexander Eastman, also known as Ohiyesa, is a profound exploration of Native American spirituality and morality as they existed before contact with missionaries and other settlers. Eastman, a Sioux physician and writer, provides a rare firsthand account of native religion, free from the filters imposed by translators or anthropologists. The book delves into the ceremonial and symbolic worship practices, the unwritten scriptures, and the spirit world of the Native Americans, emphasizing the universal quality and personal appeal of their religion. Eastman's narrative is deeply personal and reflective, drawing from his own experiences and ancestral teachings. He offers insights into the spiritual life of the American Indian, highlighting the importance of gratitude, unity, and love for one another. "The Soul of the Indian" is not just a historical account but a heartfelt tribute to the rich spiritual heritage of the Native American people.