Classical Indian Epistemology and Metaphysics
What it is
Unit 1 asks how the classical Indian schools answer two questions: how do we know (pramana), and what ultimately exists? It runs from Vedic rta and the Upanishads, through the nastika schools (Charvaka, Jaina, Bauddha), to the astika darshanas and five Vedantic schools. NET tests exact attribution: each school's pramanas, causation, error theory and terms.
Core concepts
Vedic and Upanishadic thought. Rta is the cosmic and moral order, guarded by Varuna; yajna links the human and divine realms and sustains it. Rigvedic creation hymns: Nasadiya (X.129), Purusha Sukta (X.90, the Person's sacrifice), Hiranyagarbha (X.121). The Upanishads reach Atman by setting aside the not-self (the Taittiriya's five sheaths); the Mandukya's states are jagrat, svapna, sushupti and turiya, the non-dual fourth. Brahman, approached by "neti neti", is Atman: "tat tvam asi" (Chandogya), "aham brahmasmi" (Brihadaranyaka).
Charvaka. Pratyaksha is the only pramana. Anumana fails as vyapti cannot be established: no perception covers all past, future and distant cases, and inferring it begs the question. Shabda is itself inference. Only four perceptible elements exist (no akasha); consciousness is an epiphenomenon of their bodily combination, as intoxicating power emerges from fermented ingredients, so the self is the body (dehatmavada).
Jainism. Sat has origination, destruction and permanence (utpada-vyaya-dhrauvya); a dravya bears gunas (abiding qualities) and paryayas (changing modes). Beside jiva (soul), ajiva is pudgala (matter), dharma (medium of motion), adharma (of rest), akasha and kala; all but kala are astikayas. Anekantavada (many-sidedness) makes views partial: nayavada classifies standpoints, and syadvada qualifies each with "syat" (in some respect) in the saptabhangi: is; is not; is and is not; inexpressible; then is, is not, and both, each with inexpressible. Knowledge: mati and shruta are paroksha; avadhi, manahparyaya and kevala (omniscience) are pratyaksha.
Buddhist doctrine. Four Noble Truths: dukkha, samudaya (origin in craving), nirodha (cessation) and marga, the Ashtangika Marga of right view, resolve, speech, action, livelihood, effort, mindfulness and concentration. Buddhism and Jainism are Shramanic: renunciant, open to all varnas, rejecting the Brahmanic Veda, sacrifice and varna-ashrama order. Pratityasamutpada (twelve links, avidya to jara-marana) grounds kshanabhangavada (the real is causally efficient, arthakriyakaritva, which nothing permanent can be) and anatmavada (only five skandhas: rupa, vedana, samjna, samskara, vijnana).
Schools of Buddhism. Hinayana: Vaibhashikas perceive external objects directly (bahya-pratyaksha-vada); Sautrantikas infer them from mental forms (bahya-anumeya-vada). Mahayana Yogachara (Asanga, Vasubandhu): only consciousness is real, the alaya-vijnana storing karmic seeds. Madhyamika (Nagarjuna): all is shunya, empty of svabhava because dependently arisen; two truths, samvrti and paramartha; refutation by prasanga. Tibetan Buddhism, established by Shantarakshita and Padmasambhava (8th century), joins Madhyamaka to Vajrayana; its main schools are Nyingma, Kagyu, Sakya and Gelug (Tsongkhapa).
Nyaya. Prama is yathartha anubhava; aprama is doubt, error or tarka. Four pramanas: pratyaksha, from sense–object contact (six ordinary contacts; alaukika: samanya-lakshana, jnana-lakshana, yogaja); anumana, on vyapti of hetu and sadhya, for others in five members (pratijna, hetu, udaharana, upanaya, nigamana); upamana, the name–object relation by similarity (gavaya); shabda, the word of a reliable person (apta). Hetvabhasas: savyabhichara, viruddha, satpratipaksha, asiddha, badhita. God is the world's efficient cause, atoms its material cause (Udayana: the world is an effect). Against the Buddhist pramana-vyavastha (Dignaga, Dharmakirti: perception knows only svalakshana, inference only samanya-lakshana), Nyaya holds pramana-samplava: one object, several pramanas (fire inferred, then seen). Validity and invalidity are both paratah.
Vaisheshika. Seven padarthas: dravya, guna, karma, samanya, vishesha, samavaya and abhava, added after Kanada's six. Nine dravyas: earth, water, fire, air, akasha, kala, dik, atman, manas. Asatkaryavada (arambhavada): the effect is a new beginning. A cloth has three causes: samavayi (threads), asamavayi (their conjunction) and nimitta (weaver, loom). Paramanu-karanavada: eternal atoms of the four elements form dyads (two atoms) and triads (three dyads, the least perceptible), moved by adrishta and, later, by God.
Samkhya. Satkaryavada: the effect pre-exists in its cause, since the non-existent cannot be produced, effects need definite materials, not all comes from all, a cause yields only what it can, and effect shares the cause's nature; causation is real change (parinama). Prakriti, the equilibrium of sattva, rajas and tamas, evolves 23 evolutes (mahat, ahamkara, manas, ten organs, five tanmatras, five gross elements); it is inferred since things are limited, homogeneous, potent, and emerge from and merge into a cause. Purusha, inactive consciousness, exists because aggregates serve another, an enjoyer and controller beyond the gunas is needed, and beings seek release; purushas are many since each has its own birth, death and organs. They unite as the lame (purusha) and the blind (prakriti); prakriti serves release as milk flows for the calf, so no God is needed.
Yoga. Patanjali defines yoga as chitta-vritti-nirodha. Pramanas: pratyaksha, anumana, agama; vrittis: pramana, viparyaya, vikalpa, nidra, smrti. The chitta-bhumis (Vyasa) are kshipta (restless), mudha (torpid), vikshipta (distracted), ekagra (one-pointed) and niruddha (restrained); only the last two suit samadhi. Ishvara, a special purusha untouched by afflictions and karma and denoted by Om, is the object of a niyama and a means to samadhi; hence "seshvara Samkhya".
Purva Mimamsa. Dharma is the good known through Vedic injunction. Svatah-pramanyavada: validity is intrinsic, invalidity extrinsic (from defects or sublation). The Veda is authorless and words are eternal (shabda-nityavada), denoting the jati. Vedic sentences are vidhi, nishedha, arthavada (eulogy serving a vidhi), mantra and namadheya; a vidhi rouses bhavana, shabdi (verbal force) and arthi (the agent's effort). It admits shakti (potency) and needs no creator God. Kumarila and Prabhakara differ, in that order: six pramanas or five (no anupalabdhi); abhava real or the bare locus; knowledge inferred from jnatata (knownness) or self-revealing triputi-samvit (knower, known, knowing); abhihitanvayavada or anvitabhidhanavada; viparitakhyati or akhyati.
Vedanta. Advaita (Shankara): nirguna Brahman is Atman; satta has three grades, paramarthika, vyavaharika, pratibhasika; adhyasa (superimposition) comes from maya, beginningless and anirvachaniya; the world is a vivarta of Brahman, the jiva Brahman under upadhis. Vishishtadvaita (Ramanuja): saguna Brahman has souls and matter as its inseparable body (aprthaksiddhi); seven objections to maya; Brahma-parinamavada; release by bhakti and prapatti. Dvaita (Madhva) rejects nirguna Brahman and maya; five-fold bheda (God–soul, God–matter, soul–soul, soul–matter, matter–matter); the sakshi guarantees knowledge; bhakti saves. Dvaitadvaita (Nimbarka): the jiva is jnanasvarupa; the inanimate is prakrita, aprakrita and kala. Shuddhadvaita (Vallabha): avikrta-parinamavada, Brahman becomes the world unchanged, as gold in ornaments.
Worked example
Theories of error. Seeing a shell, you judge "this is silver". Step 1: is the silver real, and where? Step 2: is the cognition false?
| School | Theory | Step 1: the silver | Step 2: the cognition |
|---|---|---|---|
| Nyaya | Anyathakhyati | Real elsewhere, presented through memory | False: shell seen as other than it is |
| Prabhakara | Akhyati | Only remembered | Not false: percept and memory not told apart |
| Kumarila | Viparitakhyati | Real elsewhere, remembered | False: two real elements wrongly joined |
| Advaita | Anirvachaniya-khyati | Neither real (sublated) nor unreal (seen) | False: an indescribable appearance |
| Ramanuja | Satkhyati | Real: silver particles are in the shell | Not false, only incomplete |
Result: only Prabhakara and Ramanuja deny false cognition; only Advaita has an indescribable object.
Common traps
- Swapping views on validity: Samkhya, both svatah; Nyaya, both paratah; Mimamsa and Advaita, validity svatah, invalidity paratah; Buddhists (traditional doxography), the reverse.
- Merging parinama and vivarta: Samkhya and Ramanuja hold real transformation, Advaita apparent, Vallabha change without alteration.
- Reversing sentence theories: abhihitanvaya (Kumarila) expresses word-meanings, then relates them; anvitabhidhana (Prabhakara) conveys them already related.
- Reading "samanya-lakshana" one way: a Buddhist object of inference, but a Nyaya extraordinary perception.
Speed technique
- Pramana ladder: Charvaka 1; Vaisheshika and Buddhists 2; Samkhya and Yoga 3; Nyaya 4; Prabhakara 5; Kumarila and Advaita 6.
- Causation: asat-karya, Nyaya-Vaisheshika; sat-karya with real change, Samkhya and Ramanuja; with apparent change, Advaita.
- In a Kumarila–Prabhakara pair, Kumarila posits more: a sixth pramana, real abhava, jnatata.
Check yourself
- Why does Charvaka reject anumana?
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Vyapti cannot be established — no perception covers every case. - What is the asamavayi karana of a cloth?
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The conjunction of the threads — the threads are its samavayi cause. - Which school holds validity intrinsic but invalidity extrinsic?
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Purva Mimamsa — svatah-pramanyavada, shared by Advaita. - Which Buddhist school holds external objects exist but are only inferred?
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Sautrantika — bahya-anumeya-vada. - What is Ramanuja's term for Brahman's relation to souls and matter?
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Aprthaksiddhi — inseparability, in place of samavaya.
Try it: Classical Indian Epistemology and Metaphysics questions
Real questions from the NET Philosophy bank on exactly this skill. Pick an answer to see the full solution — the intuition, the worked steps, the faster methods and the traps.
According to the Charvaka school, the only valid means of knowledge is:
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Answer: option B
The Charvaka or Lokayata school is the materialist school of Indian philosophy, and it accepts only what can be directly perceived.
It rejects inference because the universal relation (vyapti) on which inference rests cannot be established, and it treats testimony as itself a form of inference.
So the only valid means of knowledge for the Charvakas is perception, option B.
In the Yoga Sutra, Patanjali defines yoga as:
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Answer: option C
Patanjali defines yoga as chitta-vritti-nirodha, the restraint of the modifications (vrittis) of the mind-stuff (chitta).
Evenness of mind (samatvam) and skill in action (karmasu kaushalam) are descriptions of yoga given in the Bhagavad Gita, not in the Yoga Sutra.
So Patanjali defines yoga as the restraint of the modifications of the mind, option C.
The great saying (mahavakya) 'tat tvam asi' ('that thou art') occurs in the:
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Answer: option B
'Tat tvam asi' is taught by Uddalaka Aruni to his son Shvetaketu in the Chandogya Upanishad.
'Aham brahmasmi' is the mahavakya of the Brihadaranyaka, the Mandukya is known for the four states of consciousness, and the Taittiriya for the five sheaths.
So 'tat tvam asi' occurs in the Chandogya Upanishad, option B.
In Jaina metaphysics, which of the following substances (dravyas) is NOT an astikaya (a substance with extension)?
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Answer: option D
Jainism recognises six dravyas: jiva, and the five kinds of ajiva, namely pudgala, dharma, adharma, akasha and kala.
All of these except kala are astikayas, substances with extended, body-like being; time has no such extension.
So the substance that is not an astikaya is kala, option D.
Match the schools in List – I with their theories of error (khyativada) in List – II and choose the correct answer from the options. List – I (School) | List – II (Theory of error) --- | --- (a) Nyaya | (i) Satkhyati (b) Advaita Vedanta | (ii) Viparitakhyati (c) Vishishtadvaita (Ramanuja) | (iii) Anyathakhyati (d) Bhatta Mimamsa (Kumarila) | (iv) Anirvachaniya-khyati
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Answer: option C
Nyaya's anyathakhyati says the shell is cognised as other than it is (a – iii), and Advaita's anirvachaniya-khyati says the illusory silver is neither real nor unreal (b – iv).
Ramanuja's satkhyati finds real silver particles in the shell (c – i), and Kumarila's viparitakhyati says two real elements are wrongly joined (d – ii).
So matching List I, from "Nyaya", gives a – iii, b – iv, c – i, d – ii, option C.
Answer above — every one shows its working.