The four-voice seminar and the visiting Naiyayika
A postgraduate seminar has four speakers, twelve minutes each, before 60 listeners. The first, a Carvaka, argues that perception alone is reliable because no universal relation (vyapti) can ever be observed in full. The second, a Buddhist, argues that the self is only a stream of momentary cognitions and that universals are constructions. The third, a Samkhya, argues that the effect pre-exists in the cause and that liberation comes from discriminating purusha from prakriti. The fourth, a Mimamsaka, argues that the Veda is valid in itself, needing no author and no external verification. In the discussion the moderator asks the visiting Naiyayika to respond to each position in five minutes and to say plainly where Nyaya agrees and where it does not.
1. What is the strongest Nyaya reply to the Carvaka, and which replies should the Naiyayika avoid?
Read the worked answer
Strong reply: self-undermination. The Carvaka's argument is itself an inference: from the alleged impossibility of establishing vyapti, he concludes that inference is unreliable. That conclusion is drawn from a reason and a general relation, so the position cannot be stated without using the very instrument it rejects. If inference is wholly invalid, the argument against inference is also invalid; if the argument stands, inference is at least sometimes valid.
Second reply: vyapti does not need exhaustive observation. Nyaya holds that vyapti is established by repeated observation of agreement in presence and absence (anvaya and vyatireka), with no known exception and with tarka excluding the alternatives. The Carvaka demands a standard no one applies to practical life.
Third reply: consistency in practice. The Carvaka trusts physicians, travellers and craftsmen, which is shabda and inference in action.
Replies to avoid: claiming that perception proves universals, or that the Carvaka's senses are defective by nature. Nyaya should concede that pratyaksha is a pramana and that many particular inferences are bad; the dispute is whether anumana is a pramana as a class.
2. Where does Nyaya agree with the Buddhist, and where must it part company?
Read the worked answer
Agreements: Both accept pratyaksha and anumana as pramanas and both analyse inference in terms of paksha, hetu and vyapti. Both reject the authority of an authorless Veda and both think a mere word does not create knowledge. Both agree that many apparent universals are constructions of speech.
Disagreements:
- The self. The Buddhist holds a stream of momentary cognitions with no owner. Nyaya holds the self to be a permanent substance, distinct from body and mind, in which cognition is a quality that arises and perishes while the substance persists. Memory and recognition require a single enduring substratum: the judgement this is the same as that cannot be reconstructed out of entirely new moments with no common owner.
- Momentariness. Nyaya argues that destruction requires a cause; things do not vanish merely by existing, so momentariness is not established.
- Universals. Nyaya is a realist about jati: the universal cow is real and perceived, not a fiction, though it is not a separate substance.
- Ishvara. The Buddhist rejects a creator; Nyaya argues for one. The visitor must not pretend otherwise.
3. Contrast the Mimamsaka's svatah-pramanya with the Nyaya position on shabda, and state whether a Naiyayika can accept the Veda's authority on Mimamsa terms.
Read the worked answer
For Mimamsa, the Veda is authorless and intrinsically valid: its validity arises with it and is known with it, requiring no verifying cognition. For Nyaya, shabda is defined as aptopadesa, the utterance of a trustworthy person. Its validity depends on the speaker having ascertained the matter and being free from defect and deceit.
On the standard reading, Nyaya does not treat validity as self-certifying. A cognition's validity is confirmed by samvada, agreement with other pramanas and with successful action. This is why a Naiyayika investigates whether a report is from an apta rather than accepting it on its own word.
Can a Naiyayika accept the Veda's authority? Yes, but on his own terms: as the word of a trustworthy speaker, ultimately traced to Ishvara or to authoritative seers, and confirmed by its coherence with perception and inference. What he cannot accept is the Mimamsa claim that the Veda needs no author and no external verification. The disagreement is not about whether the Veda is useful, but about the source and certification of its validity. Both sides accept shabda as a pramana; they divide on what makes it valid.