Heterodox schools: Charvaka, Buddhism and Jainism

In short

The heterodox (nastika) schools of Indian philosophy are the three systems that reject the authority of the Vedas as a source of valid knowledge: Charvaka or Lokayata (materialism), Buddhism and Jainism. "Nastika" here means Veda-rejecting, not merely atheistic - Samkhya and Mimamsa are atheistic yet orthodox because they accept Vedic authority. Between them these schools supply Indian philosophy with its only consistent materialism, its most developed logic of non-absolutism (anekantavada, syadvada) and its most radical process ontology (pratityasamutpada, kshanikavada), and they shaped Indian ethics through ahimsa, karuna and the critique of ritual and caste. They are examined in BA/MA Philosophy papers on Indian philosophy, UGC-NET/JRF Philosophy (Unit on Indian philosophy), UPSC Civil Services (Philosophy optional Paper I and GS-I Indian culture), CUET-PG and university entrance tests, and they are standard interview ground for teaching, research, civil services and content-writing roles.

Explained

The astika-nastika divide and sources

• Criterion: astika = accepts the Veda as self-valid testimony (shabda); nastika = does not. Nyaya, Vaisheshika, Samkhya, Yoga, Mimamsa, Vedanta are astika; Charvaka, Buddhism, Jainism are nastika.
• Common wrong criterion: "nastika = atheist". Mimamsa accepts no creator God, Samkhya is nirishvara, yet both are astika; Jainism and Buddhism accept karma and rebirth yet are nastika.
• What all three heterodox schools deny: Vedic authority, the efficacy of sacrificial ritual, a creator God (ishvara-kartritva), and the religious sanction of varna-based privilege.
• What divides them: Jainism and Buddhism accept karma, rebirth and liberation; Charvaka denies all three.
• Sources: Charvaka has no surviving treatise - the *Brihaspati Sutra* is lost and the school is reconstructed from hostile summaries (Madhava's *Sarva-darshana-sangraha* ch. 1, Haribhadra's *Shaddarshana-samuccaya*, Shantarakshita's *Tattvasangraha*, the play *Prabodha-chandrodaya*); Jayarashi Bhatta's *Tattvopaplavasimha* is a surviving sceptical text usually read with it. Jainism: Umasvati's *Tattvarthadhigama Sutra*, Kundakunda, Haribhadra, Hemachandra, Prabhachandra. Buddhism: the Pali Nikayas, *Milindapanha*, Nagarjuna's *Madhyamaka-karika*, Vasubandhu's *Abhidharmakosha* and *Vimshatika*, Dignaga and Dharmakirti on logic.

Charvaka / Lokayata - materialism

• Names: *Lokayata* (prevalent in the world / confined to this world), *Charvaka* (after a teacher, or from *charv* - to chew/eat), *Barhaspatya* (from Brihaspati), *dehatmavada* (body-self theory), *bhutavada*.
• Epistemology: only perception (pratyaksha) is a pramana. Inference, testimony and comparison are rejected.
• The attack on inference (the classic exam argument): inference needs a universal relation (vyapti, "wherever smoke, there fire"). (1) Perception gives only observed cases, never "all"; (2) to establish the vyapti by another inference presupposes a vyapti - infinite regress (anavastha); (3) to establish it by testimony begs the question, since testimony itself needs inference to be trusted; (4) upadhi - an unnoticed condition - may always vitiate the generalisation. Therefore inference is only probable, never certain.
• Testimony rejected: no verbal authority is self-valid; the Vedas are "the prattle of knaves", and ritual is a livelihood device of priests.
• Metaphysics: the real consists of four elements - prithvi, jala, agni, vayu. Akasha (ether) is rejected because it is never perceived. No soul, no God, no adrishta (unseen merit), no other world, no liberation.
• Consciousness - bhutachaitanyavada: consciousness is an emergent property of the body, a by-product of a particular configuration of matter, as intoxicating power (madashakti) arises when molasses and yeast ferment, or as red appears from betel, lime and areca nut, none of which is red. Hence *chaitanya-vishishta-deha atma* - the self is just the living body.
• Death: when the body is reduced to ashes, "how can it return?" No rebirth, hence no transmigrating karma.
• Ethics - hedonism: of the four purusharthas only kama (pleasure) is real and artha is instrumental; dharma and moksha are fictions. Maxim: *yavajjivet sukham jivet* - live happily as long as you live. Pleasure mixed with pain is still worth having, "no one throws away rice because of the husk".
• Two strands: dhurta (crude) Charvaka - gross sensual hedonism, as caricatured by opponents; sushikshita (refined) Charvaka - a sceptical epistemologist (Purandara, Jayarashi) who allows practical, worldly inference while denying its power to prove the supersensible.
• Positive contribution: demand for empirical verification, rejection of superstition and priestcraft, an early naturalism, a social critique used later by reformers and rationalists.
• Limitations: (i) self-contradiction - the general claims "only perception is valid", "consciousness arises from matter", "there is no afterlife" are themselves inferences and universal; (ii) all science and all everyday action (eating to relieve hunger) rest on inference; (iii) perception itself needs memory and concepts, which are not perceived; (iv) emergence of consciousness is asserted, not explained - the hard problem; (v) a purely hedonistic ethic cannot ground obligation to others.

Jainism - anekantavada and the pluralistic real

• Lineage: 24 Tirthankaras; Rishabhanatha the first, Parshvanatha the 23rd, Mahavira (Vardhamana) the 24th and historical reorganiser, contemporary of the Buddha. Sects: Digambara and Svetambara.
• Jiva-ajiva dualism: two fundamental categories. Jiva = living substance, essentially conscious, with infinite knowledge, bliss, perception and power (ananta-chatushtaya) obscured by karma. Ajiva = pudgala (matter, atomic, with touch, taste, smell, colour), dharma (medium of motion), adharma (medium of rest), akasha (space) and kala (time).
• Seven tattvas (nine with punya and papa): 1. jiva, 2. ajiva, 3. asrava - influx of karmic matter, 4. bandha - bondage, 5. samvara - stoppage of influx, 6. nirjara - gradual shedding of accumulated karma, 7. moksha - liberation.
• Karma is material: subtle karma-pudgala sticks to the soul through passions (kashayas: anger, pride, deceit, greed), colouring it; eight main karma types including jnanavaraniya (knowledge-obscuring) and darshanavaraniya. Hence asceticism physically "burns off" karma.
• Anekantavada (non-absolutism): reality is anekanta - many-sided; every object has infinite aspects, so every judgement is partial and conditional. Illustrated by the blind men and the elephant - each is right about his part and wrong in making it the whole.
• Nayavada (standpoints): seven nayas - *naigama* (figurative/teleological), *sangraha* (class/generic), *vyavahara* (practical/particular), *rijusutra* (momentary present), *shabda* (verbal synonymy), *samabhirudha* (etymological distinction), *evambhuta* (actual present function). A naya taken as the whole truth becomes a durnaya (fallacy); this is Jainism's diagnosis of rival systems - Vedanta absolutises the universal, Buddhism the momentary particular.
• Syadvada / saptabhangi (seven-fold predication): every statement is prefixed by *syat* ("in a certain sense"): (1) syat asti - is; (2) syat nasti - is not; (3) syat asti cha nasti - is and is not; (4) syat avaktavyam - is indescribable (asserted and denied simultaneously); (5) syat asti cha avaktavyam; (6) syat nasti cha avaktavyam; (7) syat asti cha nasti cha avaktavyam. Only seven because of the three basic values and their combinations.
• Theory of knowledge: valid cognition is pramana (full) or naya (partial). Five kinds of knowledge: mati (sense-plus-mind), shruta (testimony/scripture), avadhi (clairvoyant), manahparyaya (telepathic) and kevala (omniscience). The first two are mediate (paroksha), the last three immediate.
• Ethics - triratna (three jewels): samyak darshana (right faith), samyak jnana (right knowledge), samyak charitra (right conduct) together bring liberation.
• Five vows: ahimsa (non-injury - the master virtue, extended to thought, speech and act, and to one-sensed beings), satya, asteya, brahmacharya, aparigraha (non-possession). Ascetics take them as mahavratas; laypersons as anuvratas (within a set of twelve lay vows). *Sallekhana/santhara* - the vow of voluntary fasting unto death at life's end.
• God: no creator; the universe is eternal and self-regulating. Liberated souls (siddhas, the Tirthankaras) are venerated as ideals, not as rulers of the world - hence Jainism is atheistic in the sense of anishvaravada, but spiritualistic, not materialist.
• Criticisms: Shankara and Ramanuja charge syadvada with violating non-contradiction and with self-refutation (is anekantavada itself only "in a sense" true?); Jains reply that the predicates are relativised to different standpoints, so no single proposition is both affirmed and denied in the same respect. Omniscience and the materiality of karma are also disputed.

Buddhism - the four truths, dependent origination and no-self

• Setting: Siddhartha Gautama; the middle path (madhyama pratipada) between indulgence and self-mortification, and between eternalism (shashvatavada) and annihilationism (uchchhedavada).
• Four Noble Truths (chatvari arya satyani): (1) dukkha - there is suffering; (2) dukkha-samudaya - it has a cause, craving rooted in ignorance; (3) dukkha-nirodha - it can cease (nirvana); (4) dukkha-nirodha-marga - there is a path.
• Eightfold path (ashtangika marga): right view, right resolve, right speech, right action, right livelihood, right effort, right mindfulness, right concentration - grouped as prajna (view, resolve), shila (speech, action, livelihood) and samadhi (effort, mindfulness, concentration).
• Pratityasamutpada (dependent origination): "this being, that arises" - nothing exists independently; everything is conditioned. This is the central insight from which momentariness, no-self and (later) shunyata are derived.
• The twelve nidanas (bhava-chakra): avidya → samskara → vijnana → nama-rupa → shadayatana (six sense-fields) → sparsha → vedana → trishna → upadana → bhava → jati → jara-marana. Traditionally the first two belong to the past life, the next eight to the present, the last two to the future.
• Three marks (trilakshana): anitya (impermanence), anatman/anatta (no substantial self), dukkha - with nirvana as the unconditioned.
• Kshanikavada (momentariness): whatever is real is causally efficient and arises and perishes each moment; what appears as a thing or person is a santana (series) of momentary states - like a flame or a river.
• Anatman and the five skandhas: the person is an aggregate of rupa (body), vedana (feeling), samjna (perception/naming), samskara (dispositions) and vijnana (consciousness). Nagasena's chariot analogy in the *Milindapanha*: "chariot" is a name for the assembled parts, not an extra entity. Pudgala-nairatmya = no permanent self; rebirth is causal continuity without a transmigrating substance.
• Avyakrta (unanswered questions): on whether the world is eternal, finite, whether the liberated one exists after death and so on, the Buddha kept silence - such questions are speculative, unverifiable and soteriologically useless (the arrow parable).
• Karma and ethics: karma works through volition (cetana); no God dispenses results. Virtues: karuna (compassion), maitri, mudita, upeksha; the five lay precepts (panchashila) begin with non-killing. Trisharana: Buddha, Dhamma, Sangha.
• Schools: Hinayana/Theravada - Vaibhashika (direct realism, bahya-pratyaksha-vada: external objects are perceived directly) and Sautrantika (representationism, bahyartha-anumeyavada: objects are inferred from ideas). Mahayana - Madhyamika/Shunyavada (Nagarjuna: all dharmas are shunya, i.e. devoid of svabhava; the *catushkoti* fourfold negation; two truths, samvriti-satya and paramartha-satya) and Yogachara/Vijnanavada (Asanga, Vasubandhu: only consciousness is real; alaya-vijnana as the store-consciousness carrying seeds/vasanas).
• Pramanas: the Buddhist logicians Dignaga and Dharmakirti accept only pratyaksha and anumana, with the apoha (exclusion) theory of meaning and the trairupya (three-mark) test of a valid reason.
• Arhat and Bodhisattva: the Hinayana ideal is individual liberation (arhat); the Mahayana ideal is the bodhisattva who postpones nirvana for the liberation of all.
• Limitations urged by critics: if everything is momentary, who remembers and who reaps karma (the recognition and moral-responsibility objections of Nyaya and Vedanta)? Shankara calls shunyavada nihilistic (Buddhists reply shunyata is non-substantiality, not non-existence); the no-self doctrine is said to sit uneasily with rebirth.

Key points

• Nastika - rejects Vedic authority (not simply "atheist"); Mimamsa and Samkhya are atheistic but astika.
• Lokayata/Charvaka - the only thoroughgoing materialism in Indian philosophy; sources are all second-hand.
• Pratyaksha-eka-pramana-vada - perception is the sole valid means of knowledge (Charvaka).
• Anavastha argument - vyapti cannot be proved without an infinite regress, so inference is not certain.
• Four bhutas - earth, water, fire, air; akasha rejected as imperceptible.
• Bhutachaitanyavada - consciousness emerges from matter, as intoxicating power from fermented molasses.
• Dehatmavada - the self is the conscious body; death ends it, so no rebirth, no moksha.
• Anekantavada - reality is many-sided; no single judgement captures it.
• Nayavada / durnaya - seven partial standpoints; absolutising one is the error of rival systems.
• Syadvada (saptabhangi) - seven conditional predications, each prefixed by *syat*.
• Jiva-ajiva - Jain dualism; ajiva = pudgala, dharma, adharma, akasha, kala.
• Seven tattvas - jiva, ajiva, asrava, bandha, samvara, nirjara, moksha; karma is subtle matter.
• Triratna (Jain) - right faith, right knowledge, right conduct; five vows headed by ahimsa; kevala jnana is omniscience.
• Four Noble Truths and the Eightfold Path - grouped into prajna, shila, samadhi.
• Pratityasamutpada - the twelve-linked chain of conditioned arising; the root of Buddhist metaphysics.
• Anatta and kshanikavada - the self is a series (santana) of five skandhas, not a substance.
• Four Buddhist schools - Vaibhashika (direct realism), Sautrantika (representationism), Madhyamika (shunyavada), Yogachara (vijnanavada).
• Shunyata - absence of svabhava (independent own-being), expounded through the two truths; not nihilism.

Examples

1. Saptabhangi applied to a clay pot being "permanent"

Conclusion: "the pot is permanent" and "the pot is impermanent" are both true in their own respect, so non-contradiction is not breached - the respects differ.

2. The Charvaka regress against inference, step by step

1. Claim to be proved: wherever there is smoke there is fire (universal vyapti).
2. Evidence available: a finite number of observed smoke-fire pairs in kitchens.
3. Step from "observed cases" to "all cases" is itself an inference, needing its own vyapti.
4. That vyapti needs a further vyapti - regress with no stopping point (anavastha).
5. Appeal to scripture fails, since accepting scripture presupposes an inference to its reliability.
6. Even an unbroken record may hide an upadhi (a hidden condition), as wet fuel yields smoke without visible flame in some cases.
7. Therefore inference yields probability, not knowledge - only what is now perceived is known.

Standard reply (Nyaya): vyapti is grasped by samanya-lakshana perception and confirmed by tarka and non-observation of counter-instances; and the Charvaka's own universal denial of inference is itself inferential, hence self-refuting.

3. Tracing the twelve nidanas in a concrete case A person ignorant of impermanence (avidya) forms habits of grasping (samskara); consciousness and the psycho-physical organism arise (vijnana, nama-rupa); the six sense-fields and contact follow (shadayatana, sparsha); contact with a desirable object produces pleasant feeling (vedana); feeling breeds craving for more (trishna), craving becomes clinging to possession and identity (upadana), which generates the drive to further becoming (bhava), hence birth (jati) and ageing-and-death (jara-marana). Cut any link and the chain breaks - the path targets trishna and avidya, which is why the Eightfold Path pairs ethical restraint with mindfulness and right view.

4. The Four Noble Truths as a diagnosis

Showing the path's grouping: prajna (right view, right resolve), shila (right speech, right action, right livelihood), samadhi (right effort, right mindfulness, right concentration).

5. The three schools compared

Where it is used

• University teaching and research: core content of Indian Philosophy papers in BA/MA Philosophy at Delhi University, JNU, BHU, Jadavpur, Madras, Pune and in Sanskrit, Buddhist Studies and Jainology departments (ICPR and ICHR fellowships).
• Competitive examinations: UGC-NET/JRF Philosophy, UPSC Civil Services (Philosophy optional Paper I; GS-I culture questions on Jain and Buddhist architecture, councils, and the Ashokan dhamma), state PSCs, CUET-PG, SET.
• Constitutional and legal context: Explanation II to Article 25 of the Constitution treats the reference to Hindus as including Sikhs, Jains and Buddhists for the purposes of that clause; Jains were notified as a minority community under the National Commission for Minorities Act in 2014; the Dharmachakra on the national flag and the Sarnath lion capital as the State Emblem carry Buddhist symbolism. Court litigation over the Jain practice of santhara: in Nikhil Soni v. Union of India (10 August 2015) the Rajasthan High Court held the practice illegal and punishable as suicide/abetment, and the Supreme Court stayed that judgment on 31 August 2015, so the stay holds and the practice is not barred while the appeal remains pending.
• Public policy and ethics work: ahimsa and aparigraha in animal-welfare and vegetarianism debates, environmental ethics, and in CSR and business-ethics modules; mindfulness (samyak smriti) in corporate and clinical well-being programmes.
• Heritage, tourism and museums: interpretation work at Sarnath, Bodh Gaya, Sanchi, Ajanta, Ellora, Nalanda, Shravanabelagola, Palitana, Ranakpur and ASI sites; Buddhist-circuit tourism promoted by the Ministry of Tourism.
• Careers in content and communication: NCERT/state-board textbook writing, ed-tech content for UPSC and NET, publishing, translation of Pali, Prakrit and Sanskrit texts, and journalism on religion and society.

Interview questions

• Q: Why are Charvaka, Buddhism and Jainism called nastika? A: Because they deny the self-validity and authority of the Vedas, not because they deny God - Mimamsa and Samkhya deny a creator God yet remain astika.
• Q: How does the Charvaka argue that inference is invalid? A: Inference needs a universal relation, which perception cannot supply and which can only be established by another inference - an infinite regress; a hidden condition may also always falsify the generalisation.
• Q: What is the standard objection to Charvaka epistemology? A: It is self-refuting: the claims "only perception is valid" and "there is no afterlife" are themselves universal inferences, and all practical life depends on inference.
• Q: How does the Charvaka explain consciousness? A: As an emergent property of a particular arrangement of the four elements - as intoxicating power arises in fermented molasses, which is not present in the ingredients.
• Q: State anekantavada in one sentence and give its logical expression. A: Reality has infinitely many aspects, so every judgement is partial; this is expressed logically as nayavada (standpoints) and semantically as syadvada's seven conditional predications.
• Q: Does syadvada violate the law of contradiction? A: No - affirmation and negation are relativised to different standpoints (substance versus mode), so nothing is both asserted and denied in the same respect; critics like Shankara nonetheless charge it with contradiction and self-application problems.
• Q: How does Jain karma differ from Vedantic karma? A: Jain karma is literally subtle matter (karma-pudgala) that adheres to the soul through passions and must be stopped (samvara) and shed (nirjara); Vedanta treats karma as moral desert operating under Ishvara or maya.
• Q: What exactly does pratityasamutpada assert? A: That every phenomenon arises in dependence on conditions and has no independent being - "this being, that arises" - from which impermanence, no-self and Mahayana shunyata follow.
• Q: If there is no self, who is reborn and who bears karma? A: Nothing substantial transmigrates; there is only an unbroken causal series (santana) in which each momentary state conditions the next, as one flame lights another - the Nyaya objection is that such a series cannot ground memory and responsibility.
• Q: Distinguish Vaibhashika from Sautrantika. A: Vaibhashika holds external objects are directly perceived (direct realism); Sautrantika holds we perceive ideas and infer external objects (representationism).
• Q: Is shunyavada nihilism? A: No - shunyata denies svabhava (independent own-nature), not existence; Nagarjuna's two-truth scheme preserves conventional reality (samvriti) while denying ultimate substantiality (paramartha).
• Q: Why did the Buddha refuse to answer metaphysical questions? A: Such avyakrta questions are unverifiable and irrelevant to the removal of suffering - the arrow parable: the wounded man needs the arrow out, not the archer's genealogy.
• Q: Which heterodox school is closest to modern science and why? A: Charvaka, for insisting on empirical verification and a material basis of mind - though its blanket rejection of inference makes science itself impossible, so the resemblance is partial.

Common mistakes

• Equating nastika with atheism and therefore calling Mimamsa or Samkhya heterodox.
• Reducing Charvaka to vulgar hedonism only, ignoring the sushikshita (refined sceptical) strand and treating the hostile summaries as its own texts.
• Saying Charvaka accepts five elements - akasha is rejected because it is not perceived.
• Confusing nayavada with syadvada: nayavada is the doctrine of partial standpoints, syadvada the sevenfold conditional predication built on it; also giving the seven bhangas in the wrong order or forgetting *avaktavya*.
• Treating Jainism as materialist because it has no creator God - it is a spiritual pluralism with an eternal jiva.
• Mixing up Jain and Buddhist positions on the self: Jainism affirms a permanent soul, Buddhism denies it; neither accepts a creator.
• Listing the Eightfold Path items without the prajna-shila-samadhi grouping, or garbling the order of the twelve nidanas.
• Calling shunyavada "everything is nothing", and attributing alaya-vijnana to Madhyamika instead of Yogachara.

Related topics

Vedic and Upanishadic thought · Orthodox schools: Nyaya, Vaisheshika, Samkhya, Yoga, Mimamsa and Vedanta · Indian epistemology: the pramanas · Modern Indian thinkers: Vivekananda, Tagore, Gandhi, Aurobindo and Ambedkar · Indian ethics: purusharthas, karma and ahimsa · Comparative philosophy of mind and materialism.