This is the authoritative text book of Yoga, one of the six systems of Indian philosophy. Sanskrit Text and translation with commentary which provides a full picture of what Yoga is, what its aims are, how it can be practised, and what liberation of the soul means.
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