The author,Dr.P.V.S.Suryanarayana Raju is pediatrician from Andhra Pradesh,India,born on 12th December 1950.He is working on the subject of self-inquiry for the past 30 years under the living Presence and guidance of Ramana Maharshi which he discovered 30 years ago in Ramanasramam.He is a frequent visitor to Ramanasramam and out of greatfulness to Bhagawan he wrote many books analyzing his teachings and these books are some of them.His works include The Art of self-enquiry,Alpha and Omega of self-inquiry,The essence of self-inquiry part 1 & 2, Insights in self-inquiry Part 1 & 2,Theory of self-inquiry,The Practice of self-inquiry,The theory and Practice of self-inquiry,The comprehensive book on self-inquiry,,Know Thyself,self-inquiry in yoga Vasista,Self-inquiry in Adi Sankara works,he wrote self-inquiry quotes in two volumes,commented on "who am i",Upadesa saram,Akshara Mana Malai of Ramana Maharshi and all are his products of his own experience.He wrote many books on Bhagawan in Telugu which include "Nenevadanu? which is a commentary of him on "who am i" in Telugu,Nija Vicharana and his most recent books in Telugu Vichara Chudamani,and Vichara Chandrodayam mainly deal with the practical aspect of self-inquiry and he explains in them why self-inquiry is a direct and easy way for realizing the Self.He also wrote self-inquiry in Bhagavad Gita,Bhagavad Gita commentary vol1,The essence of Bhagavad Gita.