The author has organized Swami Vivekananda's ideas to develop a holistic approach based on Vedanta to the problem of understanding and quantifying human development in this book.
Be brave! Be strong! Be fearless! Once you have taken up the spiritual life, fight as long as there is any life in you. Even though you know you are going to be killed, fight till you are killed. Don't die of fright. Die fighting. Don't go down till you are knocked down.
-Swami Vivekananda