Shantideva (Skt. Śāntideva; Tib. Shiwa Lha; Wyl. zhi ba lha) (c.685–763) — a great master, scholar, and bodhisattva, who was the author of the Bodhicharyavatara. He also wrote the Shikshasamucchaya and the Sutrasamucchaya (now lost). Under the name of Bhusuku he is listed among the eighty-four mahasiddhas.
The writings of Shantideva were based on the Mahayana Buddhist tradition. Within the Mahayana tradition in India, three main schools of thought developed: Chittamatra, Svatantrika-Madhyamika, and Prasangika-Madhyamika. Shantideva’s writings fall within the Prasangika-Madhyamika method of Buddhapalita and Chandrakirti.