Patanjali Yoga Sutras - An Upadesha by Bodhinatha - June 2011 Bodhinatha explains the ancient and revered Yoga Sutras in the light of Gurudeva's insights. He also compares some of the concepts of Patanjali with Gurudeva's teachings. The three realities, namely, Isvara, Purusha and Prakritti are outlined. Awareness and consciousness are the same and separation of the two is achieved by the artful practice of yoga.