The book describes Phylos' life in Atlantis, his spiritual development, and his eventual journey to the afterlife. Phylos describes the advanced civilization of Atlantis, which he claims was highly advanced both technologically and spiritually. He also describes the social and political structure of Atlantis, which was based on a system of spiritual hierarchy. The book is written in a highly stylized and poetic language and contains many esoteric and mystical concepts. It also includes illustrations and diagrams that are intended to convey some of the complex ideas presented in the text. While the book has been dismissed by many as a work of fiction or fantasy, it has also been embraced by some as a source of spiritual inspiration and insight. Regardless of its veracity, "A Dweller on Two Planets" remains a fascinating and thought-provoking work that has inspired many readers over the years.