Sanjaya Velatthaputta was an ancient Indian philosopher and a prominent figure in the Buddhist tradition. He is known for his role as a teacher and for his unique views on knowledge and perception. Sanjaya is often associated with the Ajivika sect, which emphasized determinism and the idea that everything is predetermined by past actions. In the Pali Canon, Sanjaya is depicted as a skeptic who questioned the nature of truth and reality. His teachings focused on the importance of personal experience and understanding, rather than relying solely on doctrines or beliefs. This approach contributed to the broader philosophical discussions during the time of the Buddha.