 Tsongkhapa framed his insights not as original contributions, but as a rediscovery of meanings already revealed by the Buddha. In all his works he characterizes his philosophy as identical to the Buddha's. Further, he says his philosophy is based on Nāgārjuna's and Nāgārjuna's follower Āryadeva's (third-fourth century) explanation of what the Buddha said. His philosophy gets its name *Prāsaṅgika (“those who reveal the unwelcome consequences [inherent in other's assertions]”) from the importance it gives to Buddhapālita's (late fifth century) explication of Nāgārjuna's work, and to Candrakīrti's defense of Buddhapālita's explanation, in the face of criticism by Bhāviveka.