The author, a Sanskrit scholar from South Africa, has selected 108 gems from the Upanishadic mine and strung them into a fascinating array. The selections have been arranged under suitable headings in an attempt to systematize the thought of the Upanishads.
Take up one idea. Make that one idea your life -- think of it, dream of it, live on that idea. Let the brain, muscles, nerves, every part of your body, be full of that idea, and just leave every other idea alone. This is the way to success, and this is the way great spiritual giants are produced. Others are mere talking machines.
-Swami Vivekananda