It is, therefore, no book for the proof-demanding concrete mind, or for those who dabble in the spectacular and the phenomenal. The true student, however, the seriously applied aspirant, will find his mind stimulated and his consciousness expanded.

    Its subject is the subtle body which all human beings possess, physical in nature but invisible to ordinary eyes. Of interest to healers, body workers, and all students of esoteric lore, Powell's discussion of the anatomy of the subtle body, its energy centers, and functions is perceptive and comprehensive.