It is over 10 years that the first edition of my book "The Concept of Energy in Hinduism" was published. I have had several enquiries from readers, which I have attempted to answer in this revised second edition. A few more sections have been incorporated herein as a result of my further investigations and practice during the intervening period. As I have mentioned in the second last para of the section "The search for a preceptor" I have utilised the last decade to achieve identification with the Unmanifest Source of Energy. I have been appropriately rewarded for my effort and this has enabled me to compile the additional sections. I have maintained my commitment for brevity, so that the book serves as a pocket companion. I have no intention of making it a library volume that is read only by a few. I wish to share my experience and happiness with as many of my fellowmen as possible.