Although this book was one of the first to be written by Alice Bailey in collaboration with the Tibetan, it is probably the most timeless, profound and least understood. "A Treatise on Cosmic Fire" deals with the underlying structure of occult teaching for the present era, with vast cosmic processes reproduced though all areas of life from universe to atom. It is, therefore, no book for the proof-demanding concrete mind, or for those who dabble in the spectacular and the phenomenal.

The theme of "initiation" appears in various relationships throughout this series of books. An initiation is an expansion of consciousness - a means of opening the mind and heart to a recognition of what already exists in reality. It is, therefore, a result of the ability to transcend those glamours and illusions which veil the truth and limit the consciousness. As a living process, initiation is experienced by all forms of life, large and small, from the universal to the particular.

The idea that a small group of dedicated aspirants could work together to help dissipate the heavy enshrouding glamours which oppress humanity and deflect the light of truth, was initially quite a startling one. Spiritual progress has for so long held no meaning for the individual other than his own personal growth, that to consider spiritual experience in direct relation to world conditions is for many a revolutionary idea.

Five volumes have been written under the overall title of A Treatise on the Seven Rays, based on the fact, the nature, the quality and the interrelationship of the seven streams of energy pervading our solar system, our planet and all that lives and moves within its orbit. The two volumes of Esoteric Psychology go extensively into the psychological make-up of a human being as the life, quality and appearance of an incarnating, evolving spiritual entity.

Throughout the whole of this series of books runs a single thread uniting various aspects of life and specialised activities within the Plan for man. This is the thread of consciousness, evolving in man through the efforts of the soul to contact and control its personality equipment; and evolving within the planet as the centre Hierarchy becomes increasingly able to impress the Plan on the minds of men.