Shantideva

Shantideva (c.685-763) — a great master, scholar, and bodhisattva, who was the author of the Bodhicharyavatara. He also wrote the Shikshasamucchaya and the Sutrasamucchaya. Under the name of Bhusuku he is listed among the eighty-four mahasiddhas. The writings of Shantideva were based on the Mahayana Buddhist tradition. (RigpaWiki)

*image courtesy of Himalayan Art Resourses