(trad. 5th–4th century bce)
Through his authorship of the Vaiśeṣikasūtra, Kaṇāda is considered to be the founder of the Vaiśeṣika darśana. He is also called Kaṇabhakṣa/Kaṇabhuj, ‘grain-eater’ (in reference to the Vaiśeṣikas' atomic theory), and ‘the owl’ (ulūka), but nothing is known about his life. The extant Vaiśeṣikasūtra is probably a composite text, put together around the turn of the Common Era.