Hinduism

एकं सद्विप्रा बहुधा वदन्ति। ekaṃ sad viprā bahudhā vadanti Truth is one; the wise speak of it in many ways.

— Ṛg Veda 1.164.46

What it calls itself

The word Hindu is not, originally, a word the tradition uses for itself. It comes from the Old Persian Hindūš — the people beyond the Sindhu (Indus) river — and spreads as an external geographical marker. The tradition’s own self-naming, where it uses one, is sanātana dharma — the eternal or perennial dharma. But many practitioners would simply name their lineage: Śaiva, Vaiṣṇava, Śākta, Smārta, Advaitin. “Hindu” is a later umbrella.

This is not a quibble; it is the key. Hinduism is not a religion in the sense of Christianity or Islam. It has no founder, no single scripture, no universal clergy, no central creed, no conversion ritual. What it is — accurately — is a civilizational ecosystem, a family of related traditions that share a vocabulary, a set of foundational texts, a pantheon (held very differently by different members), and a ritual grammar.

The tradition is comfortable with multiplicity. One practitioner may be a Śaiva by temple affiliation, an Advaitin by philosophical conviction, a bhakta by devotional practice, and a follower of a particular guru — simultaneously, without contradiction.

The strata

Hinduism is layered historically, and the layers coexist in present practice:

• Vedic (c. 1500–500 BCE) — the four Vedas (Ṛg, Sāma, Yajur, Atharva) with their ritual apparatus. Hymns, sacrificial procedures, incantations. The gods of this stratum — Indra, Agni, Varuṇa — are largely passed over in later practice.
• Upaniṣadic (c. 800–200 BCE) — philosophical dialogues internal to the Vedic corpus. The shift from outward ritual to inner realization; the emergence of ātman–brahman inquiry. Seeds of every later philosophy.
• Classical / Epic / Purāṇic (c. 400 BCE – 500 CE) — the Mahābhārata, Rāmāyaṇa, the early Purāṇas. The theistic traditions of Viṣṇu, Śiva, and Devī move to center. The Bhagavad Gītā integrates paths.
• Āgamic and Tantric (c. 500–1200 CE) — the Śaiva Āgamas, Śākta Tantras, Vaiṣṇava Saṃhitās. Temple theology, iconography, initiatory practices, the elaborate ritual structure still used in major temples today.
• Bhakti movement (c. 500–1700 CE) — the devotional revolution, expressed in vernacular languages across India. Āḻvārs and Nāyaṉārs in the Tamil south; Kabīr, Mīrā, Tulsīdās, Sūrdās, the Vaiṣṇava saints of Bengal and Maharashtra in the north. This stratum is democratic in spirit; it admits women and lower castes to the front of the tradition’s spiritual life.
• Modern (1800 CE – present) — the reform movements (Brahmo Samāj, Ārya Samāj), the Ramakrishna-Vivekananda current, the Gandhian reading of dharma, the twentieth-century gurus, the global transmission.

The three great streams

Hindu practitioners generally belong, by devotion or temple affiliation, to one of three:

• Śaiva — devotion to Śiva. Includes Śaiva Siddhānta (dualist), the non-dual Kashmir Śaivism (Abhinavagupta), the Naths, and the countless local cults of Śiva in his many forms.
• Vaiṣṇava — devotion to Viṣṇu and his avatārs, especially Kṛṣṇa and Rāma. Includes the Śrī Vaiṣṇava tradition (Rāmānuja), the Gauḍīya Vaiṣṇava (Caitanya), the Vallabha tradition, and the wider bhakti currents in which Kṛṣṇa is beloved.
• Śākta — devotion to the Goddess (Devī) in her many forms — Durgā, Kālī, Lakṣmī, Sarasvatī, and the regional goddesses. The tantric Śākta traditions are philosophically and ritually sophisticated; the popular Śākta festivals (Navarātri, Durgā Pūjā) are among the largest in India.

A fourth grouping — Smārta — holds the five primary deities (Viṣṇu, Śiva, Devī, Gaṇeśa, Sūrya) as equal expressions of one Brahman, and is associated with the Śaṅkarācārya lineage.

The six classical philosophies

The ṣaḍ-darśana — six orthodox darśanas or views — are the Hindu philosophical schools that accept the authority of the Veda:

1. Nyāya — logic and epistemology
2. Vaiśeṣika — metaphysics; a theory of atoms and categories
3. Sāṃkhya — the dualist analysis of puruṣa (consciousness) and prakṛti (nature)
4. Yoga — the practical counterpart to Sāṃkhya, systematized by Patañjali
5. Mīmāṃsā — exegesis of Vedic ritual and action
6. Vedānta — inquiry into the Upaniṣadic end of the Veda, itself branching into the three great sub-schools: Advaita (Śaṅkara), Viśiṣṭādvaita (Rāmānuja), Dvaita (Madhva)

The darśanas are not parallel religions but sister disciplines — a practitioner may be a Vedāntin by conviction and use Sāṃkhya analysis and Yoga practice without contradiction.

Core vocabulary

A handful of Sanskrit terms carry most of the freight across the traditions:

• Dharma — order, duty, teaching, the way things rightly are
• Karma — action and its consequences, continuing across lives
• Samsara — the round of birth and death
• mokṣa — liberation, the end of saṃsāra
• ātman — the innermost self
• Brahman — the ultimate reality
• guru — the teacher who transmits
• bhakti — devotion
• jñāna — knowledge / gnosis
• yoga — union, discipline, method

The terms appear across the Hindu ecosystem with meanings that shift between schools. Ātman in Advaita is Brahman itself; in Dvaita it is eternally distinct from Brahman. Karma in classical thought is mechanistic; in bhakti it is modulated by grace. The vocabulary is shared; the theologies are not.

The four paths

The Bhagavad Gītā presents four yogas — not alternatives to choose between but capacities to integrate:

• Karma yoga — the yoga of action, undertaken without attachment to results
• Bhakti yoga — the yoga of devotion, surrender to the beloved
• Jñāna yoga — the yoga of knowledge, discriminative inquiry
• Rāja yoga — the royal yoga, meditative absorption

Most practitioners emphasize one while drawing on the others. Gandhi lived karma yoga; Caitanya lived bhakti; Ramaṇa lived jñāna; the monastic Vedāntin weaves all four.

Practice

Hindu practice at any given moment might include: daily pūjā at a home shrine; temple visits and festival participation; japa — repetition of a mantra; recitation of the Gītā, Viṣṇu Sahasranāma, or the Hanumān Cālīsā; seva — selfless service; pilgrimage (tīrtha yātrā) to Varanasi, Tirupati, Haridwar, Rameshwaram, Kailash; observance of life-cycle saṃskāras (name-giving, thread ceremony, marriage, cremation); guru-discipleship; formal meditation; the disciplines of classical yoga.

The ritual life is enormously detailed and regionally variable. Most practitioners do not know the philosophy of their own tradition; they know its songs, its festivals, its stories, its food customs, its family deity. This is not a failure of the tradition but its actual medium.

Difficulties the tradition carries

A complete portrait has to name these:

• Caste. The varṇāśrama-dharma system, present in the classical texts and deeply embedded in historical practice, has been a source of entrenched structural harm. Reform traditions (Bhakti poets, Ārya Samāj, Ambedkar’s Dalit Buddhist movement) have contested it from within for centuries. The constitutional outlawing of caste discrimination in modern India is real; its social persistence is also real.
• Hindutva. The twentieth-century political movement that seeks to redefine Hindu identity in ethnonationalist terms is widely regarded — by many practicing Hindus, and by most scholars — as a departure from the tradition’s pluralist ethos rather than a continuation of it. The atlas notes the distinction.
• The woman question. Vedic-era women included ṛṣikās (seers — Gārgī and Maitreyī in the Upaniṣads); later tradition narrowed. The bhakti poets reopened; the Śākta traditions preserved feminine divinity at the center. Contemporary Hindu women’s practice is wide-ranging; the textual inheritance is mixed.
• Export distortions. Yoga as marketed in the West is a thin slice of the tradition, often shorn of its philosophical and ethical ground. “Namaste” used as an exotic flavoring, karma as “what goes around comes around,” dharma as “life purpose” — these are genuine elements pressed flat. The tradition is larger and stranger than its export.

Living tradition

Roughly 1.2 billion Hindus worldwide, the large majority in India. The tradition is vigorously alive: temple construction continues, guru lineages flourish, vernacular bhakti traditions carry on, scholarly lineages (the Śaṅkarācārya maṭhas, the Sringeri lineage, Tirumala Tirupati, Banaras Hindu University) transmit the classical learning. Festivals — Diwali, Holi, Navarātri, Durga Pūjā, Mahāśivarātri, Krishna Janmāṣṭamī, Rāma Navamī — mark the year.

The modern encounter with the West transmitted Hindu thought globally: through Ramakrishna and Vivekananda, Ramaṇa Mahāṛṣi, Paramahansa Yogananda, Swami Prabhupāda, Krishnamurti, the gurus of the countercultural period, and countless smaller streams. Much of what the contemporary West calls “spirituality” — mantra practice, yoga, chakras, non-duality, karma — is Hindu in provenance whether or not it is Hindu in practice.

sarveśāṃ svastir bhavatu sarveśāṃ śāntir bhavatu sarveśāṃ pūrṇaṃ bhavatu sarveśāṃ maṅgalaṃ bhavatu

May all beings be well. May all beings be at peace. May all beings be whole. May all beings be auspicious.

— traditional Hindu peace invocation