Yoga (philosophy) in the context of "Smartism"

Hinduism (/ˈhɪnduˌɪzəm/) is an umbrella term for a range of Indian religious and spiritual traditions (sampradayas) that are unified by adherence to the concept of dharma, a cosmic order maintained by its followers through rituals and righteous living, as expounded in the Vedas. The word Hindu is an exonym, and while Hinduism has been called the oldest surviving religion in the world, it is also described by the 19th century term Sanātana Dharma (lit. 'eternal dharma'). Vaidika Dharma (lit. 'Vedic dharma') and Arya Dharma are historical endonyms for Hinduism.

Hinduism entails diverse systems of thought, marked by a range of shared concepts that discuss theology, mythology, and other topics in textual sources. Hindu texts have been classified into Śruti (lit. 'heard') and Smṛti (lit. 'remembered'). The major Hindu scriptures are the Vedas, the Upanishads, the Puranas, the Mahabharata (including the Bhagavad Gita), the Ramayana, and the Agamas. Prominent themes in Hindu beliefs include karma (action, intent and consequences), saṃsāra (the cycle of death and rebirth) and the four Puruṣārthas, proper goals or aims of human life, namely: dharma (ethics/duties), artha (prosperity/work), kama (desires/passions) and moksha (liberation/emancipation from passions and ultimately saṃsāra). Hindu religious practices include devotion (bhakti), worship (puja), sacrificial rites (yajna), and meditation (dhyana) and Yoga. Hinduism has no central doctrinal authority and many Hindus do not claim to belong to any denomination. However, scholarly studies notify four major denominations: Shaivism, Vaishnavism, Shaktism and Smartism. The six Āstika schools of Hindu philosophy that recognise the authority of the Vedas are: Sankhya, Yoga, Nyaya, Vaisheshika, Mīmāṃsā, and Vedanta.

Hindu philosophy or Vedic philosophy is the set of philosophical systems that developed in tandem with the first Hindu religious traditions during the iron and classical ages of India. In Indian philosophy, of which Hindu philosophy is a prominent subset, the word used for philosophy is Darshana (Sanskrit: दर्शन; meaning: "viewpoint or perspective"), from the Sanskrit root 'दृश' (drish) meaning 'to see, to experience'.

The schools of thought or Darshanas within Hindu philosophy largely equate to the six ancient orthodox schools: the āstika (Sanskrit: आस्तिक) schools, defined by their acceptance of the Vedas, the oldest collection of Sanskrit texts, as an authoritative source of knowledge. Of these six, Samkhya (सांख्य) is the earliest school of dualism; Yoga (योग) combines the metaphysics of Samkhya with meditation and breath techniques; Nyaya (न्याय) is a school of logic emphasising direct realism; Vaisheshika (वैषेशिक) is an offshoot of Nyaya concerned with atomism and naturalism; Mimamsa (मीमांसा) is a school justifying ritual, faith, and religious obligations; and Vedanta (वेदान्त) contains various traditions that mostly embrace nondualism.

The history of Hinduism covers a wide variety of related religious traditions native to the Indian subcontinent. It overlaps or coincides with the development of religion in the Indian subcontinent since the Iron Age, with some of its traditions tracing back to prehistoric religions such as those of the Bronze Age Indus Valley Civilisation. Hinduism has been called the "oldest religion" in the world, but scholars regard Hinduism as a relatively recent synthesis of various Indian cultures and traditions, with diverse roots and no single founder, which emerged around the beginning of the Common Era.

The history of Hinduism is often divided into periods of development. The first period is the pre-Vedic period, which includes the Indus Valley Civilization and local pre-historic religions. Northern India had the Vedic period with the introduction of the historical Vedic religion by the Indo-Aryan migrations, starting somewhere between 1900 BCE and 1400 BCE. The subsequent period of the second urbanisation (600–200 BCE) is a formative period for Hinduism, Jainism and Buddhism followed by "a turning point between the Vedic religion and Hindu religions," during the Epic and Early Puranic period (c. 200 BCE to 500 CE), when the Epics and the first Purānas were composed. This was followed by the classical "Golden Age" of Hinduism (c. 320–650 CE), which coincides with the Gupta Empire. In this period the six branches of Hindu philosophy evolved, namely, Samkhya, Yoga, Nyaya, Vaisheshika, Mīmāṃsā, and Vedānta. Monotheistic sects like Shaivism and Vaishnavism developed during this same period through the Bhakti movement. It flourished in the medieval period from roughly 650 to 1100 CE, which forms the late Classical period or early Middle Ages, with the decline of Buddhism in India and the establishment of classical Puranic Hinduism is established.

The Bhagavad Gita (/ˈbʌɡəvəd ˈɡiːtɑː/; Sanskrit: भगवद्गीता, IPA: [ˌbʱɐɡɐʋɐd ˈɡiːtɑː], romanized: bhagavad-gītā, lit. 'God's song'), often referred to as the Gita (IAST: gītā), is a Hindu scripture, likely composed in the second or first century BCE, which forms part of the epic poem Mahabharata. The Gita is a synthesis of various strands of Indian religious thought, including the Vedic concept of dharma (duty, rightful action); Sankhya-based yoga and jnana (knowledge); and bhakti (devotion). Among the Hindu traditions, the Gita holds a unique pan-Hindu influence as the most prominent sacred text and is a central text in the Vedanta and Vaishnava traditions.

While traditionally attributed to the sage Veda Vyasa, the Gita is historiographically regarded as a composite work by multiple authors. Incorporating teachings from the Upanishads and the samkhya yoga philosophy, the Gita is set in a narrative framework of dialogue between the Pandava prince Arjuna and his charioteer guide Krishna, an avatar of Vishnu, at the onset of the Kurukshetra War.

Yoga (UK: /ˈjəʊɡə/, US: /ˈjoʊɡə/; Sanskrit: योग 'yoga' [joːɡɐ] ; lit. 'yoke' or 'union') is a group of physical, mental, and spiritual practices or disciplines that originated with its own philosophy in ancient India, aimed at controlling body and mind to attain various soteriological goals (moksha), as practiced in the Hindu, Jain, Sikh, and Buddhist traditions.

Yoga may have pre-Vedic origins, but is first attested in the early first millennium BCE. It developed as various traditions in the eastern Ganges basin drew from a common body of practices, including Vedic elements. Yoga-like practices are mentioned in the Rigveda and a number of early Upanishads, but systematic yoga concepts emerge during the fifth and sixth centuries BCE in ancient India's ascetic and Śramaṇa movements, including Jainism and Buddhism. The Yoga Sutras of Patanjali, the classical text on Hindu yoga, samkhya-based but influenced by Buddhism, dates to the early centuries of the Common Era. Hatha yoga texts began to emerge between the ninth and 11th centuries, originating in tantra.

Dualism in Indian philosophy is a belief, or large spectrum of beliefs, held by certain schools of Indian philosophy that reality is fundamentally composed of two parts or two types of existence. This mainly takes the form of either mind-matter dualism, as in some strands of Buddhist philosophy, or consciousness-nonconsciousness dualism in the Samkhya and Yoga schools of Hindu philosophy. These can be compared and contrasted with mind-body dualism in Western philosophy of mind and metaphysics.

Another form of dualism in Hindu philosophy is found in the Dvaita ("dualism") Vedanta school, which regards God and the world as two realities with distinct essences; this is a form of theistic dualism. By contrast, schools such as Advaita ("nondualism") Vedanta embrace nondualism or absolute monism, regarding dualism as an illusion (maya).