In the third chapter, titled ‘Panchakosha-viveka’, Swami Vidyaranya, the author, expounds the nature of the ultimate Reality using the methodology of the analysis of the five sheaths (koshas) employed in the Taittiriya-upanishad. He enumerates in detail the nature of the five sheaths and through logic and reasoning establishes how the Self is different from the five sheaths. Swami Vidyaranya thereafter explains the essential nature of the Self to be Satyam, Jnanam and Anantam. In the final section, Swamiji analyzes the nature of Ishvara and His power of maya. It is then shown that the Self, which is the illuminator of the five sheaths, is truly the substratum of the entire world. 

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