Why did I love this book?
This book provides a historical overview of yoga philosophy and psychology and is a great introduction to the study of yoga. It was originally written in French by Mircea Eliade, who became the dean of Religious Studies all over the world, for decades training graduate students at the University of Chicago. The book is now a little dated on certain topics such as tantra and the yogic practices of Buddhism. Nevertheless, it stands as the preëminent classic in the field of yoga studies. It has a bouncy but elegant style and has been a favorite in the courses I have taught on yoga at the University of Texas at Austin.
While a student in India in his early twenties, Eliade had an affair with the daughter of his Sanskrit teacher, the renowned and august scholar, Surendranath Dasgupta. There is apparently a novel by Eliade in Romanian about this and another by the young Maitreyi Devi in Bengali.