However, the Classical school of yoga, greatly defined by Patanjali’s Yoga Sutras perhaps the most authoritative text on yoga, defines yoga as a focusing of the attention to whatever object is being contemplated to the exclusion of all others as stated by Georg Feuerstein in The Yoga Tradition.Sukasana, Sukhasana Pose Yoga But first, let’s look at its beginnings. for many centuries, it was believed that yoga arrived with the Aryan invasion, along with all other aspects of advanced Indian culture, around 15 00 B.C.E. The Aryans came from ancient central Asia and were a tall, light-skinned, Sanskritspeaking people who are credited with importantSukasana, Sukhasana Pose Yoga elements of India’s heritage of spiritual civilization, religious, social, and economic institutions. While bringing these elements, their warlike culture enabled them to dominate the darker-skinned indigenous Indians, whose literary and The Mahabarata with the Bhagavad Gita is written. Major developments: theism movement of devotional faith in development of Patanjali’s Yoga Sutras Hindu deities, especially Vishnu, Shiva, and Devi 500 B.