This book is an illuminating sequel to the author's earlier well-researched 'Journey of the Upanishads to the West', both focusing on the glorious Oriental literary heritage to the world at large.
Anything that is secret and mysterious in these systems of yoga should be at once rejected. The best guide in life is strength. In religion, as in all other matters, discard everything that weakens you, have nothing to do with it.
-Swami Vivekananda