A special feature of the book is that the learned Swamiji quotes copiously from various Srutis, Smritis and Puranas as also from different orthodox commentators to explore the real meaning of the Mantras of the Ishopanishad.
The disciple must have great power of endurance. Bear all evil and misery without one thought of unhappiness, resistance, remedy, or retaliation. That is true endurance, and that you must acquire.
-Swami Vivekananda