Nausiphanes (Greek: Ναυσιφάνης; lived c. 325 BC), a native of Teos, was attached to the philosophy of Democritus, and was a pupil of Pyrrho.[1][2] He had a large number of pupils, and was particularly famous as a rhetorician. Epicurus was at one time one of his hearers, but was unsatisfied with him, and apparently abused him in his writings.[3][4] He also argued that the study of natural philosophy (physics) was the best foundation for studying rhetoric or politics.[5] There is a polemic in Philodemus' On Rhetoric against Nausiphanes' view that the natural philosopher is the best orator.[6] Epicurus may also have derived his three criteria of truth in his Canon from the Tripod of Nausiphanes.[3]