Originally published in 1972  as channeled personal letters from Kuthumi, Ascended Master teacher to his initate Messengers, Mark L. and Elizabeth Clare Prophet, this 1986 version of the book furthers the work in soul development, begun in 1873 by Masters Kuthumi and Djwal Kul. In image and word, these authors explore the "magnetic forcefield of the body of man," called by some the human aura . Although both Eastern and Western theories and prophets are discussed, there is a Christian-based aesthetic to this text, and the references to Jesus CHRIST and the KJV Bible are dominant. Excellent features of this book include the extensive, descriptive Glossary, the comprehensive drawings of the chakras, descriptions of the color energy properties and the translated written meditations.