This book published by Advaita Ashrama, a publication house of Ramakrishna Math, Belur Math, India is a representative compilation of Swami Vivekananda’s teachings from the Complete Works of Swami Vivekananda covering the wide spectrum of his teachings. We hope the present volume gives the reader an idea of the vastness of Swami Vivekananda's mind and also inspires the reader to realize the divine within through knowledge, devotion, mind-control and service to fellow beings.