This book provides an intelligible basis to the occultist for a study of consciousness in depth and in right relation to the life pattern of the universe. The "atom" emerges as a minute but complete replica of the energy structure common to all forms of life -- cosmic, planetary, human and subhuman. Groupings and relationships are shown as they exist on a small and on a vast scale within the evolutionary process, and the effects of energy interplay on the whole structure of consciousness.