BharatNotes Overview
Indian philosophy (Darshana, literally "seeing" or "vision") represents one of the oldest and most diverse intellectual traditions in the world. Unlike Western philosophy which often treats philosophy as a purely academic discipline, Indian Darshana is deeply connected to moksha (liberation) --- the ultimate goal of human life. Indian philosophical schools are broadly classified into Astika (orthodox --- accepting the authority of the Vedas) and Nastika (heterodox --- rejecting Vedic authority).
For UPSC, Indian philosophy appears in GS-I (Indian Culture), Prelims (factual questions on schools, founders, texts), and Essay (philosophical concepts like dharma, karma, ahimsa).
Classification of Indian Philosophical Schools
| Category | Schools | Defining Feature |
|---|---|---|
| Astika (Orthodox) | Nyaya, Vaisheshika, Sankhya, Yoga, Purva Mimamsa, Uttara Mimamsa (Vedanta) | Accept the authority of the Vedas as a valid source of knowledge |
| Nastika (Heterodox) | Charvaka (Lokayata), Buddhism, Jainism | Reject the authority of the Vedas |
For Prelims: The term "Nastika" does not mean "atheist" in the modern sense. It specifically refers to schools that reject the Vedas as authoritative. Buddhism and Jainism are Nastika despite having rich spiritual and metaphysical traditions. Sankhya is Astika (accepts the Vedas) despite being technically atheistic (does not accept Ishvara/God as a separate entity).
The Six Orthodox Darshanas (Shad Darshana)
The six orthodox schools are traditionally grouped in three complementary pairs: Nyaya-Vaisheshika, Sankhya-Yoga, and Mimamsa-Vedanta.
Nyaya (Logic and Epistemology)
| Aspect | Detail |
|---|---|
| Founder | Sage Gautama (Akshapada Gautama) |
| Key text | Nyaya Sutras |
| Core focus | Logic, epistemology (theory of knowledge), and valid reasoning |
| Pramanas (means of knowledge) | Accepts four: Pratyaksha (perception), Anumana (inference), Upamana (comparison/analogy), Shabda (verbal testimony/scripture) |
| Key contribution | Developed a rigorous five-membered syllogism (Pancha-Avayava) for logical proof: (1) Pratijna (proposition), (2) Hetu (reason), (3) Udaharana (example), (4) Upanaya (application), (5) Nigamana (conclusion) |
| Metaphysics | Accepts the existence of God (Ishvara) as the efficient cause of the universe; the universe is composed of eternal atoms |
| Moksha | Liberation through right knowledge (tattva-jnana) --- understanding the 16 categories (padarthas) of the Nyaya system |
Vaisheshika (Atomism and Metaphysics)
| Aspect | Detail |
|---|---|
| Founder | Sage Kanada (Kashyapa) |
| Key text | Vaisheshika Sutras |
| Core focus | Metaphysics, categorisation of reality, and atomic theory |
| Key concept | Propounds Paramanu-vada (atomic theory) --- all material objects are composed of indivisible, eternal atoms (paramanu) of four types: earth (prithvi), water (apas), fire (tejas), and air (vayu) |
| Categories (Padarthas) | Originally six: Dravya (substance), Guna (quality), Karma (action), Samanya (generality), Vishesha (particularity), Samavaya (inherence); later added Abhava (non-existence) |
| Relation to Nyaya | Complementary --- Nyaya provides the logical methodology; Vaisheshika provides the metaphysical framework |
| Moksha | Liberation through knowledge of the six/seven categories of reality |
For Mains: Vaisheshika's atomic theory (Paramanu-vada) is remarkably similar to modern atomic theory in its insistence that all matter is composed of indivisible, eternal particles. Kanada proposed that atoms combine in pairs (dvyanuka) and triplets (tryanuka) to form visible matter --- a concept that predated Democritus by several centuries.
Sankhya (Dualism)
| Aspect | Detail |
|---|---|
| Founder | Sage Kapila |
| Key text | Sankhya Sutras; Sankhya Karika by Ishvarakrishna (most influential systematic text) |
| Core focus | Dualistic metaphysics --- the universe consists of two independent, eternal realities |
| Two realities | Purusha (consciousness/self --- passive, eternal, multiple) and Prakriti (matter/nature --- active, eternal, singular) |
| Evolution of Prakriti | Prakriti consists of three gunas: Sattva (purity/knowledge), Rajas (activity/passion), Tamas (inertia/darkness). When equilibrium is disturbed, evolution (srishti) begins |
| 25 Tattvas | Sankhya enumerates 25 principles: 1 Purusha + 24 evolutes of Prakriti (including Mahat/Buddhi, Ahamkara, Manas, 5 Jnanendriyas, 5 Karmendriyas, 5 Tanmatras, 5 Mahabhutas) |
| Theistic position | Does not accept Ishvara (God) as a separate entity; liberation comes from discriminative knowledge (viveka-jnana) between Purusha and Prakriti |
| Moksha | Liberation occurs when Purusha realises its distinction from Prakriti |
Yoga (Discipline and Practice)
| Aspect | Detail |
|---|---|
| Founder | Sage Patanjali |
| Key text | Yoga Sutras (196 sutras in 4 chapters/padas) |
| Core focus | Practical discipline for achieving liberation; closely allied with Sankhya's metaphysics |
| Definition of Yoga | "Yogas chitta vritti nirodhah" --- Yoga is the cessation of fluctuations of the mind (Sutra 1.2) |
| Ashtanga Yoga | Eight-limbed path: (1) Yama (restraints), (2) Niyama (observances), (3) Asana (postures), (4) Pranayama (breath control), (5) Pratyahara (withdrawal of senses), (6) Dharana (concentration), (7) Dhyana (meditation), (8) Samadhi (absorption) |
| Difference from Sankhya | Accepts Ishvara (God) as a special Purusha, untouched by afflictions; Sankhya is non-theistic |
| UNESCO recognition | International Day of Yoga (21 June) declared by UN General Assembly in 2014; Yoga inscribed on UNESCO's Intangible Cultural Heritage list (2016) |
For Prelims: Patanjali's Yoga Sutras define yoga as "chitta vritti nirodhah" (cessation of mental fluctuations). The Ashtanga Yoga (8-limbed path) sequence is: Yama, Niyama, Asana, Pranayama, Pratyahara, Dharana, Dhyana, Samadhi. The UN International Day of Yoga is 21 June (first observed 2015).
Purva Mimamsa (Ritualism)
| Aspect | Detail |
|---|---|
| Founder | Sage Jaimini |
| Key text | Mimamsa Sutras (also called Purva Mimamsa Sutras); largest of all sutra works with ~2,500 sutras |
| Core focus | Interpretation of the Vedic rituals (karma-kanda); inquiry into the nature of dharma |
| Key principle | The Vedas are eternal (apaurusheya --- not authored by any person, including God) and self-valid; dharma is what the Vedas command |
| Epistemology | Accepts six pramanas: Pratyaksha, Anumana, Upamana, Shabda, Arthapatti (presumption), and Anupalabdhi (non-apprehension) |
| Emphasis | Proper performance of Vedic rituals (yajnas) leads to desired results (heaven, prosperity); this is the path to dharma |
| Key scholars | Kumarila Bhatta and Prabhakara developed the two main sub-schools |
| Moksha | Early Mimamsa focused on svarga (heaven) through ritual; later incorporated moksha |
Uttara Mimamsa / Vedanta (Knowledge of Brahman)
Vedanta is the most influential of the six Darshanas and has three major sub-schools:
| Sub-school | Founder / Key Proponent | Key Text | Core Doctrine |
|---|---|---|---|
| Advaita Vedanta (Non-dualism) | Adi Shankaracharya (8th century CE) | Commentaries on Brahma Sutras, Upanishads, Bhagavad Gita (Prasthanatrayi) | Brahman alone is real; the world is maya (illusion); individual self (Atman) is identical with Brahman; "Tat Tvam Asi" (Thou Art That) |
| Vishishtadvaita (Qualified Non-dualism) | Ramanujacharya (11th--12th century CE) | Sri Bhashya (commentary on Brahma Sutras) | Brahman is real AND the world is real; individual souls and matter are attributes (visheshana) of Brahman; God is Vishnu/Narayana; path of devotion (bhakti) |
| Dvaita (Dualism) | Madhvacharya (13th century CE) | Commentaries on Brahma Sutras | Brahman (Vishnu), individual souls (jiva), and matter (jada) are three eternally distinct realities; five-fold difference (pancha-bheda) |
| Concept | Advaita | Vishishtadvaita | Dvaita |
|---|---|---|---|
| Brahman | Nirguna (without qualities) | Saguna (with qualities); Vishnu/Narayana | Saguna; Vishnu is supreme |
| World | Maya (illusion) | Real; body of Brahman | Real; eternally distinct from Brahman |
| Atman-Brahman | Identical | Atman is part of Brahman (body-soul analogy) | Eternally distinct |
| Path to Moksha | Jnana (knowledge) | Bhakti (devotion) + Prapatti (surrender) | Bhakti (devotion) |
For Mains: The three schools of Vedanta represent a philosophical spectrum from monism (Advaita) to dualism (Dvaita). Shankara's Advaita influenced the unity of Indian thought; Ramanuja's Vishishtadvaita provided philosophical grounding for the Bhakti movement; Madhva's Dvaita influenced Vaishnavism in Karnataka and the Haridasa tradition. All three engage with the Prasthanatrayi (triple canon): Upanishads, Brahma Sutras, and Bhagavad Gita.
The Three Heterodox Schools (Nastika)
Charvaka / Lokayata (Materialism)
| Aspect | Detail |
|---|---|
| Attributed founder | Brihaspati (legendary) |
| Core doctrine | Radical materialism; only matter is real; consciousness is a by-product of material elements |
| Epistemology | Accepts only Pratyaksha (direct perception) as a valid means of knowledge; rejects inference, scriptural testimony |
| Metaphysics | Denies the existence of God, soul (atman), afterlife, karma, and moksha |
| Ethics | Pursuit of pleasure (kama) and wealth (artha) is the goal of life; "As long as you live, live happily; eat ghee even if you have to borrow" |
| Significance | Earliest known materialist philosophy in the world; important as a counter-tradition that stimulated philosophical debate |
Buddhist Philosophy
| Concept | Detail |
|---|---|
| Founder | Siddhartha Gautama (the Buddha), 6th--5th century BCE |
| Four Noble Truths | (1) Dukkha --- life is suffering; (2) Samudaya --- suffering arises from desire (tanha/trishna); (3) Nirodha --- suffering can be ended; (4) Magga --- the path to ending suffering is the Eightfold Path |
| Noble Eightfold Path | Right View, Right Intention, Right Speech, Right Action, Right Livelihood, Right Effort, Right Mindfulness, Right Concentration |
| Pratityasamutpada | Dependent Origination --- all phenomena arise in dependence on causes and conditions; nothing has independent, permanent existence |
| Anatman (Anatta) | No-self doctrine --- rejects the Hindu concept of a permanent, unchanging soul (atman) |
| Three Marks of Existence | Anicca (impermanence), Dukkha (suffering), Anatta (no-self) |
| Major schools | Theravada (Southeast Asia), Mahayana (East Asia), Vajrayana (Tibet, Mongolia) |
| Philosophical sub-schools | Sautrantika, Vaibhashika (Abhidharma tradition), Madhyamaka (Nagarjuna --- Shunyavada/emptiness), Yogachara (Asanga, Vasubandhu --- consciousness-only) |
Jain Philosophy
| Concept | Detail |
|---|---|
| Key proponents | Mahavira (24th Tirthankara, 6th century BCE); Umasvati (Tattvarthasutra) |
| Anekantavada | Doctrine of many-sidedness --- reality has multiple aspects; no single viewpoint can capture the whole truth |
| Syadvada | Doctrine of conditional predication --- seven-fold logical framework (Saptabhangi); every statement is conditionally true ("syat" = "in some respect") |
| Ahimsa | Non-violence as the supreme ethical principle; extends to all living beings including microorganisms |
| Jiva and Ajiva | Reality consists of Jiva (soul/consciousness) and Ajiva (non-soul: matter/pudgala, space, time, motion, rest) |
| Karma theory | Karma is conceived as subtle matter (karma-pudgala) that binds to the soul; liberation requires shedding all karma through austerity and right conduct |
| Moksha | Liberation through the Three Jewels (Triratna): Right Faith (Samyak Darshana), Right Knowledge (Samyak Jnana), Right Conduct (Samyak Charitra) |
Key Philosophical Concepts Across Schools
| Concept | Meaning | Schools that Accept |
|---|---|---|
| Dharma | Cosmic order, moral law, duty | All schools except Charvaka |
| Karma | Law of moral causation; actions determine future outcomes | All except Charvaka |
| Moksha / Nirvana | Liberation from the cycle of birth and death (samsara) | All except Charvaka |
| Atman | Individual self/soul | Hindu schools (except Charvaka); Jainism (as jiva); Buddhism rejects (anatman) |
| Brahman | Ultimate reality / cosmic principle | Vedanta (primary focus); acknowledged in most Hindu schools |
| Ahimsa | Non-violence | Central to Jainism and Buddhism; important in Hindu ethics (Yoga, Vedanta) |
| Samsara | Cycle of birth, death, and rebirth | All except Charvaka |
| Maya | Illusion / phenomenal world | Central to Advaita Vedanta; not accepted by Dvaita or Vishishtadvaita |
| Prakriti | Primordial matter/nature | Sankhya, Yoga (fundamental concept) |
| Purusha | Pure consciousness/self | Sankhya, Yoga |
Indian Logic (Nyaya) --- The Syllogism
The Nyaya five-membered syllogism is a distinctive Indian contribution to formal logic:
| Step | Sanskrit Name | Example |
|---|---|---|
| 1. Proposition | Pratijna | "The hill has fire" |
| 2. Reason | Hetu | "Because it has smoke" |
| 3. Example | Udaharana | "Wherever there is smoke, there is fire, as in a kitchen" |
| 4. Application | Upanaya | "The hill has smoke" |
| 5. Conclusion | Nigamana | "Therefore, the hill has fire" |
For Mains: The Indian syllogism differs from the Aristotelian syllogism in two important ways: (1) it has five members instead of three, adding the example and application steps; (2) it moves from particular observation to general principle and back to particular conclusion, making it both inductive and deductive. Dignaga (Buddhist logician) later refined Indian logic by reducing it to a three-membered syllogism.
Indian Knowledge Systems Beyond Philosophy
| Knowledge System | Sanskrit Term | Description |
|---|---|---|
| Ayurveda | Science of Life | Ancient medical system; Charaka Samhita (internal medicine), Sushruta Samhita (surgery); based on three doshas: Vata, Pitta, Kapha |
| Jyotisha | Astronomy/Astrology | One of the six Vedangas; includes mathematical astronomy; Aryabhata's Aryabhatiya, Varahamihira's Brihat Samhita |
| Ganita | Mathematics | Indian contributions: zero (shunya), decimal place-value system, algebra (Brahmagupta), trigonometry (Aryabhata), infinite series (Kerala school) |
| Vyakarana | Grammar | Panini's Ashtadhyayi --- earliest formal grammar in any language; 3,959 rules; influenced modern linguistics |
| Arthashastra | Political Science | Kautilya's treatise on statecraft, governance, economics, and military strategy |
| Natyashastra | Performing Arts | Bharata Muni's encyclopedic work on drama, dance, music; Rasa theory (nine rasas) |
Comparative Table: Orthodox vs. Heterodox Schools
| Feature | Nyaya | Vaisheshika | Sankhya | Yoga | Mimamsa | Vedanta | Charvaka | Buddhism | Jainism |
|---|---|---|---|---|---|---|---|---|---|
| Vedic authority | Yes | Yes | Yes | Yes | Yes | Yes | No | No | No |
| God (Ishvara) | Yes | Yes | No | Yes | Early: No; Later: Yes | Varies by sub-school | No | No (original) | No |
| Atman | Yes | Yes | Yes (Purusha) | Yes (Purusha) | Yes | Yes | No | No (Anatman) | Yes (Jiva) |
| Karma | Yes | Yes | Yes | Yes | Yes | Yes | No | Yes | Yes (as matter) |
| Focus | Logic | Atomism | Dualism | Practice | Ritual | Knowledge | Materialism | Middle Path | Asceticism |
Epistemology --- Pramanas Across Schools
The number of valid means of knowledge (pramanas) accepted by each school is a frequently tested Prelims topic:
| School | No. of Pramanas | Pramanas Accepted |
|---|---|---|
| Charvaka | 1 | Pratyaksha (perception) only |
| Buddhism (Vaibhashika) | 2 | Pratyaksha, Anumana (inference) |
| Vaisheshika | 2 | Pratyaksha, Anumana |
| Sankhya | 3 | Pratyaksha, Anumana, Shabda (testimony) |
| Yoga | 3 | Pratyaksha, Anumana, Shabda |
| Nyaya | 4 | Pratyaksha, Anumana, Upamana (comparison), Shabda |
| Mimamsa | 6 | Pratyaksha, Anumana, Upamana, Shabda, Arthapatti (presumption), Anupalabdhi (non-apprehension) |
| Advaita Vedanta | 6 | Same as Mimamsa |
For Prelims: Charvaka accepts only one pramana (perception). Nyaya accepts four. Mimamsa and Advaita Vedanta accept the maximum of six pramanas. Buddhism generally accepts only two (perception and inference). This table is extremely high-yield for Prelims.
Influence on Modern Thought
| Philosopher / Thinker | Influence |
|---|---|
| Swami Vivekananda | Popularised Advaita Vedanta globally; addressed Parliament of Religions (Chicago, 1893) |
| Mahatma Gandhi | Drew on ahimsa (Jainism/Buddhism), karma yoga (Bhagavad Gita), and satya (truth) for political philosophy |
| Dr. B.R. Ambedkar | Embraced Navayana Buddhism; critiqued caste from a philosophical standpoint |
| Sri Aurobindo | Integral Yoga --- synthesis of Vedanta, Yoga, and evolutionary philosophy |
| S. Radhakrishnan | Interpreted Indian philosophy for Western audiences; served as India's 2nd President |
| Amartya Sen | Drew on Indian philosophical traditions of argumentation (Nyaya) and pluralism (Anekantavada) in works on justice and development |
Recent Developments (2024–2026)
Indian Knowledge Systems Division — NEP 2020 Implementation (2024–25)
The IKS (Indian Knowledge Systems) Division under the Ministry of Education (established under NEP 2020) funded over 700 research projects by 2024–25, covering Nyaya logic, Mimamsa hermeneutics, Vedanta epistemology, Ayurveda pharmacology, and Yoga therapy. AICTE and UGC have introduced IKS electives in engineering and liberal arts curricula. The CBSE has also introduced IKS-informed content in school textbooks.
This represents the most systematic government effort since independence to mainstream Indian philosophical traditions in formal education — realizing a vision articulated by scholars from S. Radhakrishnan to J.K. Mehta.
UPSC angle: Prelims — IKS Division, NEP 2020. Mains GS1 — Indian philosophical contributions; GS2 — education policy; GS4 — philosophical ethics (Nyaya, Mimamsa, Yoga Sutras as ethical frameworks).
WHO Global Centre for Traditional Medicine — Jamnagar (Fully Operational 2024)
The WHO Global Centre for Traditional Medicine (GCTM), inaugurated at Jamnagar, Gujarat in April 2022 by PM Modi and WHO Director General Dr Tedros, became fully operational in 2024. The GCTM focuses on evidence-based research into traditional medicine systems — including Ayurveda, Yoga, Siddha, and Unani — and builds a global evidence base for traditional medicine. This represents formal international recognition of the philosophical and scientific traditions studied in this chapter.
UPSC angle: Prelims — WHO GCTM location (Jamnagar, Gujarat), operational from 2024. Mains GS1 — Indian philosophy and traditional medicine; GS2 — India's global health diplomacy; India's AYUSH sector.
Key Terms for Quick Revision
| Term | Meaning |
|---|---|
| Darshana | Philosophical school; literally "seeing/vision" |
| Astika | Orthodox schools that accept Vedic authority |
| Nastika | Heterodox schools that reject Vedic authority |
| Pramana | Means of valid knowledge (perception, inference, testimony, etc.) |
| Purusha | Pure consciousness/self (Sankhya/Yoga) |
| Prakriti | Primordial matter/nature (Sankhya/Yoga) |
| Advaita | Non-dualism (Shankaracharya) --- Atman = Brahman |
| Vishishtadvaita | Qualified non-dualism (Ramanuja) |
| Dvaita | Dualism (Madhva) --- God, souls, and matter are eternally distinct |
| Anekantavada | Many-sidedness doctrine (Jainism) |
| Pratityasamutpada | Dependent origination (Buddhism) |
| Paramanu-vada | Atomic theory (Vaisheshika) |
| Prasthanatrayi | Triple canon of Vedanta: Upanishads, Brahma Sutras, Bhagavad Gita |
Exam Strategy
For Mains Answer Writing: Indian philosophy questions in GS-I and Essay often test conceptual understanding rather than rote facts. Structure answers around: (1) the school's core metaphysical position, (2) its epistemology (pramanas), (3) its path to moksha, and (4) its contemporary relevance. Comparison questions (Advaita vs. Dvaita, or Indian vs. Greek philosophy) are common --- use tables to organise differences clearly.
For Prelims: Focus on founder-text-school matching: Gautama-Nyaya Sutras, Kanada-Vaisheshika Sutras, Kapila-Sankhya, Patanjali-Yoga Sutras, Jaimini-Mimamsa Sutras, Badarayana-Brahma Sutras. Remember the number of pramanas accepted by each school (Nyaya: 4, Mimamsa: 6, Charvaka: 1). Know the three sub-schools of Vedanta and their proponents.
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