Religious & philosophical traditions
Indian religious and philosophical traditions for UPSC: Vedic-Upanishadic thought, the six Darshanas, Buddhism, Jainism, Bhakti-Sufi movements and syncretic faiths.
The Vedic foundation and the Upanishadic turn
Indian philosophy is conventionally periodised from the four Vedas (Rigveda, Samaveda, Yajurveda, Atharvaveda, c. 1500–900 BCE), through the Brahmanas (ritual), Aranyakas (forest treatises) and the Upanishads (c. 800–500 BCE). The Upanishads mark the shift from sacrificial ritualism (karma-kanda) to metaphysical enquiry (jnana-kanda), articulating the identity of Brahman (ultimate reality) and Atman (self). The Mundaka Upanishad gives India its national motto, Satyameva Jayate ("Truth alone triumphs"); the Chandogya Upanishad preserves Tat Tvam Asi ("That thou art"); the Brihadaranyaka offers Aham Brahmasmi.
The six orthodox Darshanas (Astika)
Schools that accept Vedic authority are astika; those that reject it are nastika (Buddhism, Jainism, Charvaka). The six astika Darshanas are conventionally paired:
- Nyaya (Gautama/Akshapada, Nyaya Sutras): logic and epistemology; four valid means of knowledge (pramanas) — perception, inference, comparison, testimony.
- Vaisheshika (Kanada, Vaisheshika Sutras): atomism (paramanu) and categorisation of reality.
- Samkhya (Kapila): the oldest school, dualism of Purusha (consciousness) and Prakriti (matter); the three gunas — sattva, rajas, tamas. It is atheistic in classical form.
- Yoga (Patanjali, Yoga Sutras, c. 2nd century BCE): the eightfold path (ashtanga); shares Samkhya metaphysics but admits Ishvara.
- Mimamsa (Jaimini): ritual exegesis, defence of Vedic injunctions (dharma).
- Vedanta (Badarayana, Brahma Sutras): culminating school. Its sub-schools — Advaita (non-dualism, Adi Shankaracharya, c. 788–820 CE), Vishishtadvaita (qualified non-dualism, Ramanuja, 11th–12th c.), and Dvaita (dualism, Madhva, 13th c.) — dominate later Hindu theology.
Heterodox responses
The sixth century BCE produced sustained challenges to Vedic orthodoxy. Jainism, systematised by Mahavira (Vardhamana, the 24th Tirthankara, c. 599–527 BCE), teaches the Triratna (right faith, right knowledge, right conduct), the five vows (ahimsa, satya, asteya, brahmacharya, aparigraha), anekantavada (non-absolutism) and syadvada. It split into Digambara and Svetambara sects, the schism crystallising around the Council of Pataliputra (c. 3rd century BCE). Buddhism, founded by Siddhartha Gautama (c. 563–483 BCE), turns on the Four Noble Truths, the Eightfold Path and the doctrine of Pratityasamutpada (dependent origination). The Four Buddhist Councils — Rajagriha (483 BCE), Vaishali (383 BCE), Pataliputra under Ashoka (c. 250 BCE) and Kashmir under Kanishka (1st century CE) — shaped the canon and the Hinayana–Mahayana divergence. Charvaka/Lokayata materialism rejected the soul, afterlife and Vedic authority outright.