In the course of gearing up for my big lecture on Yoga Sutra I had come across a dramatic story that even Wikipedia mentions in its entry. I’ve called it “The Legend of Lost Sutra”. If briefly, the legend tells that Yoga Sutra, a sacred text known in India from ancient times, practically sank into oblivion in the 12th century and was recovered only in the 19th, owing to Vivekananda and the Theosophical Society.
The text fell into obscurity for nearly 700 years from the 12th to 19th century, and made a comeback in late 19th century due to the efforts of Swami Vivekananda, the Theosophical Society and others. It gained prominence again as a comeback classic in the 20th century.
However, this is not how the real story goes.