This book forms a companion volume to the Swami's Universal Prayers. In the Introduction a detailed and systematic account of the theory and practice of spiritual life is given. The main body of the book containing Sanskrit texts and their English translations, presents a large number of important scriptural passages through which the ancient sages and seers of India enlighten us on ethics, philosophy and practice of meditation.
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