The best of the best Veda-knowing men first divided the Vedas into four parts. He was a great Brahma-knowing Rishi, a great poet, a truthful man, a holy ascetic.
विव्यासैकं चतुर्धा यो वेदं वेदविदां वरः। परावरज्ञो ब्रह्मर्षिः कविः सत्यव्रतः शुचिः॥