Book excerpt: This eighth and final volume of Astadala Yogamala Brings the reader to the culmination of the entire project. The author has guided us carefully through the maze and intricacies of an apparently unsurmountable subject that is the terrain of yoga knowledge. He has shone rays of light into every conceivable aspect of yoga sadhana, elucidating this difficult subject succinctly and with lucidity. Guruji (Yogacharya B.K.S. Iyengar) calls and encourages us to climb to the apex of the subject so that the reader may see for themselves its vastness, its purity and its brilliance.