Namaste, Following is the link to an interesting talk on the subject by Vidvan Subbaraya V Bhatta Mahodaya: https://www.youtube.com/watch?v=ABKqC0CUGFA Kind rgds, --Praveen R. Bhat /* येनेदं सर्वं विजानाति, तं केन विजानीयात्। Through what should one know That owing to which all this is known! [Br.Up. 4.5.15] */