Hindu Philosophy Schools — Revision Notes

⚡ 30-Second Revision

Astika (Orthodox): — Accept Vedas. 6 schools: Samkhya, Yoga, Nyaya, Vaisheshika, Mimamsa, Vedanta.
Nastika (Heterodox): — Reject Vedas. 3 schools: Buddhism, Jainism, Charvaka.
Samkhya: — Kapila, Dualism (Purusha-Prakriti), 3 Gunas, Atheistic.
Yoga: — Patanjali, Ashtanga Yoga, practical Samkhya, Ishvara as aid.
Nyaya: — Gautama, Logic, 4 Pramanas (Pratyaksha, Anumana, Upamana, Shabda), God as efficient cause.
Vaisheshika: — Kanada, Atomism, 6 Padarthas, God as guiding force.
Mimamsa: — Jaimini, Vedic rituals, Dharma, Karma, early non-theistic.
Vedanta: — Badarayana (Brahma Sutras), Upanishads, Brahman-Atman. Sub-schools: Advaita (Shankara, non-dual), Vishishtadvaita (Ramanuja, qualified non-dual), Dvaita (Madhva, dual).
Buddhism: — Buddha, 4 Noble Truths, 8-fold Path, Anatta, Anicca, Dukkha, Nirvana.
Jainism: — Mahavira, Ahimsa, Anekantavada, Syadvada, Jiva, Kevala Jnana.
Charvaka: — Brihaspati, Materialism, only Pratyaksha, no God/soul/afterlife.

2-Minute Revision

Indian philosophy is categorized into Astika (orthodox, accepting Vedas) and Nastika (heterodox, rejecting Vedas) schools. The six Astika schools are Samkhya (dualistic, Purusha-Prakriti), Yoga (practical application of Samkhya with Ashtanga Yoga), Nyaya (logic, 4 pramanas), Vaisheshika (atomistic, 6 padarthas), Mimamsa (Vedic rituals, dharma), and Vedanta (Upanishadic, Brahman-Atman, with sub-schools like Advaita, Vishishtadvaita, Dvaita).

These schools collectively explore metaphysics, epistemology, and ethics, largely aiming for Moksha (liberation) through diverse paths like knowledge, action, or devotion. The three Nastika schools are Buddhism (Four Noble Truths, Eightfold Path, Anatta), Jainism (Ahimsa, Anekantavada, Syadvada, Jiva), and Charvaka (materialism, only perception as pramana).

While Nastika schools reject Vedic authority, they often share concepts like Karma and Samsara. This rich intellectual tradition has profoundly shaped Indian culture, ethical frameworks, and spiritual practices, offering timeless insights relevant to modern challenges and contributing significantly to India's global soft power.

5-Minute Revision

The study of Hindu Philosophy Schools, or Darshanas, is fundamental for UPSC aspirants, offering a deep dive into India's intellectual heritage. These schools are broadly divided into Astika (orthodox) and Nastika (heterodox) based on their acceptance or rejection of Vedic authority.

The six Astika schools – Samkhya, Yoga, Nyaya, Vaisheshika, Mimamsa, and Vedanta – form the core of Hindu thought. Samkhya, a dualistic system, posits Purusha (consciousness) and Prakriti (matter) as ultimate realities, explaining cosmic evolution through the three Gunas.

Yoga, building on Samkhya, provides the practical Ashtanga Yoga for mental discipline and liberation, accepting Ishvara as a meditative aid. Nyaya, the school of logic, emphasizes four pramanas (perception, inference, comparison, testimony) for valid knowledge, positing God as the efficient cause.

Vaisheshika, an atomistic philosophy, categorizes reality into six Padarthas, with God guiding atomic motion. Mimamsa focuses on Vedic rituals and Dharma, emphasizing the efficacy of actions. Vedanta, based on the Upanishads, explores the Brahman-Atman relationship, with key sub-schools: Advaita (Shankara) asserting non-duality, Vishishtadvaita (Ramanuja) proposing qualified non-dualism with devotion, and Dvaita (Madhva) advocating complete dualism.

These schools, despite their differences, converge on Moksha as the ultimate goal, achieved through various paths.

Conversely, the three prominent Nastika schools – Buddhism, Jainism, and Charvaka – reject Vedic infallibility. Buddhism, founded by Gautama Buddha, centers on the Four Noble Truths and the Eightfold Path to attain Nirvana, emphasizing Anatta (no-self) and Anicca (impermanence).

Jainism, systematized by Mahavira, champions extreme Ahimsa (non-violence), Anekantavada (multiplicity of viewpoints), and Syadvada (conditional predication) for soul purification (Jiva) and Kevala Jnana.

Charvaka, a radical materialist school, accepts only Pratyaksha (perception) as valid knowledge, rejecting God, soul, and afterlife, advocating for worldly pleasure. These schools, through their rigorous epistemologies, diverse metaphysical claims, and ethical frameworks, have profoundly shaped Indian culture, ethical discourse, and spiritual practices.

Their debates fostered a vibrant intellectual tradition, and their principles continue to influence modern thought, from global Yoga movements to secular ethics and critical inquiry, making them highly relevant for understanding India's past and present.

Prelims Revision Notes

1
Classification: — Astika (Orthodox - accept Vedas: Samkhya, Yoga, Nyaya, Vaisheshika, Mimamsa, Vedanta). Nastika (Heterodox - reject Vedas: Buddhism, Jainism, Charvaka).
2
Samkhya: — Founder: Kapila. Core: Dualism (Purusha-Prakriti), 3 Gunas (Sattva, Rajas, Tamas). Atheistic. Pramanas: Pratyaksha, Anumana, Shabda. Text: Samkhya Karika.
3
Yoga: — Founder: Patanjali. Core: Practical Samkhya, Ashtanga Yoga (Yama, Niyama, Asana, Pranayama, Pratyahara, Dharana, Dhyana, Samadhi). Accepts Ishvara as aid. Text: Yoga Sutras.
4
Nyaya: — Founder: Gautama. Core: Logic, Epistemology. Pramanas: 4 (Pratyaksha, Anumana, Upamana, Shabda). God: Efficient cause. Text: Nyaya Sutras.
5
Vaisheshika: — Founder: Kanada. Core: Atomism (Paramanus), 6 Padarthas (Dravya, Guna, Karma, Samanya, Vishesha, Samavaya, Abhava). God: Guiding force. Text: Vaisheshika Sutras.
6
Mimamsa: — Founder: Jaimini. Core: Vedic rituals (Karma-kanda), Dharma, efficacy of actions. Early non-theistic. Pramanas: 6 (Pratyaksha, Anumana, Upamana, Shabda, Arthapatti, Anupalabdhi). Text: Mimamsa Sutras.
7
Vedanta: — Founder: Badarayana (Brahma Sutras). Core: Upanishads, Brahman-Atman relationship. Prasthanatrayi (Upanishads, Brahma Sutras, Bhagavad Gita).

* Advaita: Shankara. Non-dualism (Atman=Brahman), Maya (world illusory). Jnana Marga. * Vishishtadvaita: Ramanuja. Qualified non-dualism (souls/matter attributes of Brahman). Bhakti Marga. * Dvaita: Madhva. Dualism (God, souls, matter distinct). Bhakti Marga.

1
Buddhism: — Founder: Siddhartha Gautama. Core: 4 Noble Truths, 8-fold Path, Anatta (no-self), Anicca (impermanence), Dukkha (suffering). Goal: Nirvana. Texts: Tripitaka.
2
Jainism: — Founder: Mahavira (24th Tirthankara). Core: Ahimsa (non-violence), Anekantavada (multiplicity of viewpoints), Syadvada (conditional predication), Jiva (soul), Ajiva (non-soul). Goal: Kevala Jnana, Moksha. Texts: Agamas.
3
Charvaka: — Founder: Brihaspati. Core: Materialism, Atheism. Pramanas: Only Pratyaksha. No God, soul, afterlife. Hedonism. Texts: Known through critiques.

Mains Revision Notes

1
Introduction: — Define Darshanas, Astika/Nastika classification, and their significance in Indian thought. Emphasize the pursuit of Moksha/Nirvana.
2
Astika Schools - Contributions & Convergence:

* Samkhya & Yoga: Provide a rational cosmology (Samkhya) and a practical path to self-realization (Yoga). Influence on psychology, holistic health. Convergence: Kaivalya through discernment/mental control.

* Nyaya & Vaisheshika: Developed rigorous logic (Nyaya) and atomistic metaphysics (Vaisheshika). Influence on legal reasoning, scientific inquiry. Convergence: Liberation through valid knowledge of reality.

* Mimamsa: Focused on Vedic hermeneutics and Dharma. Emphasized ethical action and ritual efficacy. Influence on traditional law, cultural preservation. Convergence: Attainment of Dharma and later Moksha through righteous action.

* Vedanta: Explored Brahman-Atman, leading to diverse spiritual paths (Jnana, Bhakti). Profound influence on modern Hinduism, interfaith dialogue, ethics. Convergence: Realization of ultimate reality.

1
Nastika Schools - Departures & Shared Concerns:

* Buddhism: Rejection of Vedas, Anatta, Four Noble Truths, Eightfold Path. Emphasis on compassion, impermanence. Global influence on mindfulness, peace. Departure: No permanent soul, no creator God.

Shared: Karma, Samsara, Nirvana. * Jainism: Rejection of Vedas, extreme Ahimsa, Anekantavada, Syadvada. Emphasis on asceticism, self-purification. Influence on environmental ethics, pluralism. Departure: No creator God, unique soul concept (Jiva).

Shared: Karma, Samsara, Moksha. * Charvaka: Radical materialism, only Pratyaksha. Critique of dogma. Influence on secularism, scientific skepticism. Departure: Complete rejection of all supernatural, ethical hedonism.

Shared: Focus on human experience.

1
Common Themes & Interconnections: — Pramanas (epistemology), Karma, Dharma, Moksha/Nirvana, debates and intellectual synthesis. Highlight how these schools shaped India's pluralistic intellectual tradition.
2
Modern Relevance: — Yoga/Buddhism for well-being, Nyaya for critical thinking, Jainism for environmental ethics, Vedanta for universal values. Connect to GS-I (Culture), GS-IV (Ethics), GS-II (Polity/Soft Power).

Vyyuha Quick Recall

To remember the six Astika schools in order of their traditional pairing: Samkhya Yoga Nyaya Vaisheshika Mimamsa Vedanta. Think: 'SAM-YO-NY-VAI-MI-VE' – sounds like a name you'd call out to a friend who's a philosopher! For Nastika, remember 'B-J-C': Buddhism, Jainism, Charvaka. Simple and effective for Prelims recall.