Wisdom is the Tree of Knowledge, NIgama eva Kalpataru. Its leaves million are the millions of verses which grace Philosophia Indica ! Its branches are the Poetic Meters. Oordha Moolamadha Shakha / Ashwadhvam Pahur Avyayam/ Chandamsi Yasya Parnani / Yastham Veda sa Vedavit ! Maharshi Bharadwaja prayed for thousand years of longevity so that he could understand the esoteric meaning of these glorious verses !