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 will is stronger than anything else. Everything must go down before the will, for it comes from God. A pure and strong will is omnipotent.
-Swami Vivekananda