Nyaya

Nyāya

The school of logic and epistemology: right reasoning as a path to liberation.

Editorial overviewThe Nyaya Sutras, attributed to Gautama (Akshapada), are generally placed by scholars in the early centuries CE; the school developed through Vatsyayana, Uddyotakara, Udayana and later the Navya-Nyaya of Gangesha (c. 14th century).

In simple words

Nyaya is the Indian school of logic. It asks: how do we really know something is true? It believes that clear thinking and correct knowledge of how things are can free us from suffering.

Overview

Nyaya ("method" or "rule of reasoning") is the classical Indian school of logic and theory of knowledge. It analyses the pramanas, the valid means of knowing, and the structure of sound argument and debate, including a five-membered form of inference. It holds a realist view: the world of substances, qualities and relations exists independently of the mind and can be known. Nyaya holds that the self is an eternal substance distinct from body and mind, which becomes conscious only when connected with a mind and body. Suffering arises from false knowledge, and liberation is the self's permanent release from pain and from all experience. Nyaya merged with Vaisheshika into a combined school, and later Nyaya developed influential arguments for the existence of God.

Scholar’s note

Navya-Nyaya ("new logic"), inaugurated by Gangesha's Tattvachintamani, developed a precise technical language of limitors and relations that shaped scholarly discourse across disciplines. Udayana's Nyayakusumanjali is a classic of theistic argument.

Core questions

?How do we know something is true?
?What makes an argument valid?
?Does the world exist independently of our minds?
?Can the existence of God be proven?

How it sees

Editorial overview

What problem is it trying to solve?: How can we attain the right knowledge that ends suffering, and how can true knowledge be distinguished from error?
What does it consider real?: A plurality of real entities, organised (with Vaisheshika) into categories such as substance, quality and action; many eternal selves; atoms; and God as an efficient cause.
What is valid knowledge?: Four: perception (pratyaksha), inference (anumana), comparison or analogy (upamana) and testimony (shabda). The validity of knowledge is established by external checks (paratah pramanya).
What is the Self?: The self is an eternal, all-pervading substance, distinct from body, senses and mind; consciousness, pleasure and pain are qualities it acquires only in connection with a mind.
What causes bondage?: False knowledge (mithya-jnana), which produces faults such as desire and aversion, which produce activity, birth and suffering — a chain set out in the Nyaya Sutras.
What is liberation?: Apavarga: absolute freedom from suffering, in which the self exists without pain — and, on the classical view, without consciousness or pleasure.
What is the path?: Right knowledge of the categories of reality, gained through the pramanas and disciplined reasoning, supported by ethical discipline and meditation.

Core concepts

Conceptप्रमाणPramana — means of valid knowledgeThe accepted sources of valid knowledge, such as perception, inference and testimony.Conceptआत्मन्Atman — the SelfThe innermost Self — what you are beneath body, mind and personality.Conceptईश्वरIshvara — GodThe Lord — God as ruler, creator and object of worship.Conceptज्ञानJnana — knowledgeLiberating knowledge — seeing reality and the Self as they are.Conceptअविद्याAvidya — ignoranceFundamental misunderstanding of oneself and reality — the root of bondage.Conceptमोक्षMoksha — liberationFinal freedom from bondage and the cycle of rebirth.ConceptदुःखDukkha — suffering, unsatisfactorinessSuffering, stress or unsatisfactoriness — the starting point of the Buddha's teaching and a shared concern of Indian thought.

Primary texts

Major thinkers

Thinkerअक्षपाद गौतमGautama (Akshapada)The Nyaya Sutras are placed by scholars roughly between the 2nd century BCE and the 2nd century CE, and probably grew in layers.

Where it disagrees

Stated neutrally. The purpose is understanding, not a verdict.

With Buddhist philosophy · the self and enduring substances
Buddhist logicians deny an enduring self and substances; Nyaya defends both at length.
With Advaita Vedanta · consciousness and the self
Advaita holds consciousness is the Self's nature; Nyaya holds it is an adventitious quality.
With Purva Mimamsa · God and the Veda
Nyaya holds the Veda is authored by God and valid for that reason; Mimamsa holds it is authorless.

TraditionवैशेषिकVaisheshikaNyaya and Vaisheshika merged into a single Nyaya-Vaisheshika system Traditionबौद्ध दर्शनBuddhist philosophyNyaya developed in long debate with Buddhist logicians such as Dignaga and Dharmakirti Traditionपूर्व मीमांसाPurva MimamsaShares realism, but disagrees about the authorship and self-validity of the Veda

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What is God?How do we know something is true?

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