" The source of my father’s teaching, and the essence of Yoga, was formulated by the great Indian sage, Patanjali, more than two thousand years ago in this succinct definition: Yoga is the ability to direct the mind exclusively toward an object and sustain that direction without any distractions. That "

― T.K.V. Desikachar , Health, Healing, and Beyond: Yoga and the Living Tradition of Krishnamacharya