Brahma Sutras

The Brahma Sūtras (Sanskrit: ब्रह्मसूत्राणि), also known as the Vedanta Sūtra (Sanskrit: वेदान्त सूत्र), or as Shariraka Sūtra, and Bhikshu-sūtra (latter two in monastic traditions), are a Sanskrit text which criticizes the metaphysical dualism of the influential Samkhya philosophy, and instead synthesizes and harmonizes divergent Upanishadic ideas and practices about the essence of existence, postulating Brahman as the only origin and essence of everything. It is attributed to the sages Bādarāyaṇa, who is also called Vyāsa (arranger), but probably an accumulation of incremental additions and changes by various authors to an earlier work, completed in its surviving form in approx. 400–450 CE. The oldest version may be composed between 500 BCE and 200 BCE, with 200 BCE being the most likely date.

The Brahma Sūtras consist of 555 aphoristic verses (sutras) in four chapters, dealing with attaining knowledge of Brahman. Rejecting the smriti as a base of knowledge, it declares that the Vedic Upanishads are the only acceptable source of truth, infallible revelations describing the same metaphysical Reality, Brahman, which cannot be different for different people. The text attempts to synthesize and harmonize diverse and sometimes apparently conflicting vidyas ("knowledges") of, and upasanas (meditation, worship) of the essence of existence, stating they are actually synonyms for Brahman. It does so from a bhedabheda-perspective, arguing, as John Koller states: "that Brahman and Atman are, in some respects, different, but, at the deepest level, non-different (advaita), being identical."

The first chapter rejects Samkhya's view on pradhana, stating that an inert first principle cannot account for a universe which reflects purpose and intelligence. It harmonizes different views of Absolute Reality found in the Upanishads, subsuming them under the concept of Brahman. The second chapter reviews and addresses the objections raised by samkhya and other competing orthodox schools of Hindu philosophy, Nyaya, Yoga, Vaisheshika and Mimamsa, as well as heterodox schools such as Buddhism and Jainism. The third chapter compares the vidyas and upasanas found in the Upanishads, deciding which are similar and can be combined, and which are different. The last chapter states why such a knowledge is an important human need.

The Brahma Sūtras is one of three most important texts in Vedanta along with the Principal Upanishads and the Bhagavad Gita. It has been influential to various schools of Indian philosophies, but interpreted differently by the non-dualistic Shiva Advaita and Advaita Vedanta sub-schools, and the Vaishnava theistic Vishishtadvaita and Dvaita Vedanta sub-schools, as well as others. Several commentaries on the Brahma Sūtras are lost to history or yet to be found; of the surviving ones, the most well studied commentaries on the Brahma Sūtras include the bhashya by Adi Shankara, The Vaishnava-exegetes Srinivasa, Ramanuja, Madhvacharya, Bhaskara, Baladeva Vidyabhushan, Ramanandacharya and the only Shaiva exegete Srikantha Sivacharya.

The Brahma Sūtras or Brahmasutra are attributed to Badarayana. In some texts, Badarayana is also called Vyasa, which literally means "one who arranges".

Badarayana was the Guru (teacher) of Jaimini, the latter credited with authoring Mimamsa Sutras of the Mimamsa school of Hindu philosophy. This is likely, given that both Badarayana and Jaimini quote each other as they analyze each other's theories, Badarayana emphasizing knowledge while Jaimini emphasizes rituals, sometimes agreeing with each other, sometimes disagreeing, often anti-thesis of the other.

The Brahma Sūtras text is dated to centuries that followed Buddha and Mahavira, because it mentions and critiques the ideas of Buddhism and Jainism in Chapter 2. The text's relative chronology is also based on the fact that Badarayana quotes all major known orthodox Hindu schools of philosophy except Nyaya. The exact century of its composition or completion in final form is unknown. 200 BCE seems to be the most likely date for its initial composition, with scholars such as Lochtefeld suggesting that the text was composed sometime between 500 and 200 BCE, while Sarvepalli Radhakrishnan and Dasgupta independently suggest the 2nd century BCE as more likely. Paul Deussen places it between 200 BCE and 400 CE.

Hermann Jacobi in early 20th century suggested that Madhyamaka Buddhist concepts such as Sunyavada, acknowledged in the Brahma Sūtras, may be a late invention, and suggests that both Sunyavada and Brahma Sūtras may therefore have emerged between 200 and 450 CE. Daniel Ingalls disagreed with Jacobi chronology in his 1954 paper, critiquing Jacobi's assumptions and interpretation of sutras 2.2.28-32 in dating the entire document, and stating that "the Brahma Sūtras could not have been composed later than the start of the common era". According to Hajime Nakamura, the Brahma Sūtras were likely complete in the current form between 400 and 450 CE. The existence of earlier versions of the Brahma Sūtras, and multiple authors predating Badarayana, is supported by textual evidence.