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.
The disciple must have great power of endurance. Bear all evil and misery without one thought of unhappiness, resistance, remedy, or retaliation. That is true endurance, and that you must acquire.
-Swami Vivekananda