Synopsis Yoga is one of the striking products of Indian mind and character. It has claims both as a system of practical discipline and a system of philosophical thought. The present book Patanjali's Yoga Sutras, with the Samkhya Pravacana commentary of Vachaspati Misra, with English translation by Rama Prasada and an introduction from Rai Bahadur Srisa Chandra Vasu, forms one of the six Darsanas of ancient Indian philosophy. The main purpose of this book is to disclose the secret doctrines of Yoga, give the practical knowledge to the aspirant and guide him to the realization of the Individual Self to the realization of the Supreme Self.