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 will is stronger than anything else. Everything must go down before the will, for it comes from God. A pure and strong will is omnipotent.
-Swami Vivekananda