B.K.S. Iyengar is one of the world's foremost teachers of yoga, and author of "Light on Yoga" and "Light on Pranayama". In this book, he offers his thoughts on many practical and philosophical subjects, ranging from the place of yoga in our daily lives to Patonjolis Yoga Sutras. He includes chapters on yoga and health, childhood, love, death, faith, teachers and teaching. The author argues that yoga is a spiritual path involving a great deal more than physical exercise. Yet this spirituality is deeply rooted in practicality, and all the philosophical concepts covered in the book are related directly and specifically to the practice of yoga postures and breathing.