Patañjali has presented this ancient Yoga Vidya (the Knowledge Of Yoga) in such a Scientific and Rational way that every theory, hypnothesis and principle put forth by Patañjali can be through most rigorous modern scientific methodology. Perhaps this is the reason that modern Spiritual trends seem to have their roots in Patañjali Yoga Sutras. This provides the Patañjali Yoga Sutra a status of Yoga Sastra to be studied by every Scientific Student of Yoga.