This work is significant in being the product of a single-minded pursuit and undivided devotion and in completing it with success the author has immortalized himself. The peculiar characteristic of this hole-hearted dedication is that it hasn’t got the least trace of any commercial intent, nor is the strenuous effort motivated by any personal gain. 
In this esoteric work the author interprets to us the actual text of Sankara Bhashya on the world’s most ancient and lofty attestation of the science of the self, which combines the eternal rules that govern the phenomenal universe and the intangible cosmos, too rational to be rejected by infidels, too experiential to be ignored by scientists, too rebelliously truthful to be bound by priestly rituals. This book, which is the valuable product of a life-long study and research, can well claim the merit of offering unerring guidance to any sincere student of Indian philosophy. 

Contents:

• Foreword by Justice V.R. Krishna Iyer
• Author’s Preface 
• To Himn on the most hight 
• At the lotus feet of Sri Sankara 
• Introduction 
• Source of the Upanishads 
• The meaning of the word Upanishad 
• Brahman of the Upanishad 
• Upanishads in the West
• Sri Sankara, the great commentator 
• Gobhila Karika 
• Narada Karika
• Swami Vivekananda on Isa
• Sree Narayana Guru and Isa 
• Aurobindo blames Sankara 
• Isavasya and its variant text
• The Isavasya Upanishad 
• Introduction
• Text
• The Kena Upanishad
• Introduction
• Khanda I
• Khanda II
• Khanda III
• Khanda IV
• The Katha Upanishad 
• Introduction Chapter One 
• Valli I 
• Valli II 
• Valli III 
• Chapter Two 
• Valli I
• Valli II 
• Valli III
• The Mandukya Upanishad & The Karika of Sri Gaudapada 
• Introduction 
• Agama Prakarana 
• Vaitathya Prakarana
• Advaita Prakarana
• Alatasanti Prakarana 
• List of Abbreviations 
• Glossary of Sanskrit words