The Yoga Sutras of Patanjali is the most authoritative text on Yoga as a practice. It is also known as the Yoga Darshana because it is the fundamental text of Yoga as a philosophy (though practice is discussed), one of the six orthodox systems (darshanas) of Sanatana Dharma, the Eternal Religion. There is no need to have "faith" in these texts, for their statements can be verified by any reader, as has been done over thousands...