Brhadaranyaka Upanishad - This book presents a lucid exposition of select portions of this Upanishad in the light of modern thought and modern needs. The Revered Swami has done this by freely drawing from contemporary scientific thought, biology, and physics, and by laying stress on the relevance of Vedantic ideas to these areas of modern thought.
The correct meaning of the statement The Vedas are beginningless and eternal is that the law or truth revealed by them is permanent and changeless.
-Swami Vivekananda