This book forwards the laws and principles as well as methods of Yoga-practice, based on the teachings of Patanjali.

Swami Abhedananda was a practical Yogi, and he got teachings and inspiration on Yoga from his beloved Master, Sri Ramakrishna Paramahansa. The Swami has, therefore, dealt with the subject on Yoga from his personal experience, and has disclosed its methods and truth with the most scientific and rational explanation. His writing on 'Was Christ a Yogi' is a very interesting and historical one.