“Yoga examines the totality of being, every layer of existence from body inward, sorting, testing, observing, experimenting, dissecting, and classifying until a full blueprint of the human being is built up. The ancients yogis and philosopher saints systematically did this until they found the light they were looking for, the eternal, unchanging Self, the part of us that answers once and for all the original, inevitable question, “Who am I?” Their gift to us lies in the knowledge and techniques and maps of their search that they bequeathed to us, so that we too can each answer our own question, since it is certain no one else can answer it for us.” Yogācārya B.K.S. Iyengar, Light on Life, 2005, p. 190.