The author had quoted from this Upanishad and explained its ideas in several of his lectures, class-talks, and conversations. All this material, spread throughout the nine volumes of his Complete Works, has been brought together in this book for the first time. What makes this compilation a treasure trove of original ideas and masterly insights is that the author goes straight to the heart of the subject to focus on the essentials, and to evolve practical methods from abstract principles.
I hate this world, this dream, this horrible nightmare, with its churches and chicaneries, its books and blackguardisms, its fair faces and false hearts, its howling righteousness on the surface and utter hollowness beneath and, above all, its sanctified shopkeeping!
-Swami Vivekananda