""Theosophy, Spiritualism, and Christianity"" is a book written by W.J. Coleville that explores the similarities and differences between three major spiritual belief systems. Theosophy is a mystical philosophy that seeks to understand the nature of reality and the universe, while spiritualism is a belief in the existence of spirits and the ability to communicate with them. Christianity, on the other hand, is a monotheistic religion based on the life...