This book offers a reliable introduction to Indian philosophical thought and to the teachings of Yoga, clarifies th mutual position of the two disciplines - their relatedness, interdependence, differences and antagonisms at various times and in various schools - and discusses the position of Yoga in the modern world. It is based on original research and will be of interest to scholars and students of Indian philosophy and Yoga as well as to readers from wide circles of the public who wish to supplement their interest in Yoga practice with a solid knowledge of its historical and philosophical connections For this reason care has been taken to make it as readable as th subject permits without letting it suffer from undue simplification.