Shantideva (Sanskrit: Śāntideva; Chinese: 寂天; Tibetan: ཞི་བ་ལྷ།, THL: Zhiwa Lha; Mongolian: Шантидэва гэгээн; Vietnamese: Tịch Thiên) was an 8th-century CE Indian philosopher, Buddhist monk, poet, and scholar at the mahavihara of Nalanda. He was an adherent of the Mādhyamaka philosophy of Nāgārjuna. He is also considered to be one of the 84 mahasiddhas and is known as Bhusuku.