"...But One System Among Others"

"Teachings on Yoga appear first in passages of the earlier Upanisads... In these texts, different authorities promote diverse teachings and definitions of Yoga. This diversity reflects the situation in ancient India, where different systems of Yoga co-existed. In the course of time, however, the Yogasutra or Yogasutras (YS)... has become the 'classical' text on Yoga and the basis for a system superseding other systems of Yoga. Although is has received an extraordinary amount of attention from modern scholars, as well as from contemporary Yoga practitioners, one should keep in mind that the system of the YS is but one Yoga system among others."

From "Eighty-four Asanas in Yoga" by Gudrun Buhnemann