For the first time in written history we find precise and scientific explanations of the three aspects of human existence: the Heart Region, which relates to life in this physical plane; the Mind Region, which relates to our subtle existence, especially the process of transcending ego; and the Central Region, which goes beyond the mind to the realm of the soul.
Efficacy of Raja Yoga is a book to re-read along with one’s spiritual practice, as with each reading it as if another layer of ignorance has been peeled off, revealing more of our potential.