This book serves as an introduction to the six systems of Hindu philosophy. Though these six systems are different in their approaches to the truth, they are unanimous as far as the final goal of humankind is concerned, which is, total eradication of suffering and attainment of state of eternal peace.
When we come to nonattachment, then we can understand the marvelous mystery of the universe: how it is intense activity and at the same time intense peace, how it is work every moment and rest every moment.
-Swami Vivekananda