This can be said to be the greatest of all Upanishads, not only in size but also in regard to the substance and theme it deals with. Shankarachaya's commentary on it is also the greatest of all his commentaries. The volume contains the text in Devanagari, a lucid and faithful translation of the text and commentary, relevant notes, references to quotations, and an index. All this makes this book indispensable to the students of Vedanta, especially those who are deficient in Sanskrit language, for a easy and correct comprehension of the subject.
Be strong! ... You talk of ghosts and devils. We are the living devils. The sign of life is strength and growth. The sign of death is weakness. Whatever is weak, avoid! It is death. If it is strength, go down into hell and get hold of it! There is salvation only for the brave. None but the brave deserves the fair. None but the bravest deserves salvation.
-Swami Vivekananda