This book contains conversations of Holy Mother Sri Sarada Devi, originally in Bengali, and recorded by her disciples. The English translation is simple and attractive and has a close affinity to the original. It also contains a biographical introduction by Swami Nikhilananda.
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