Nyaya Sutras

Nyāyasūtra

The founding text of Nyaya: an account of the valid means of knowledge, the structure of inference, and the rules and pitfalls of debate.

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Tradition: Nyaya
Difficulty: advanced
Attribution: Gautama (Akshapada)Traditionally attributed to Gautama (Akshapada); the text likely grew in layers
Period · language: Scholars place its compilation roughly between the 2nd century BCE and the 2nd century CE, with later additions possible · Sanskrit
Themes: Knowledge · Logic · Debate · Inference · Liberation

Why read this?

It is the foundation of Indian logic and epistemology. Almost every later school, including Buddhist and Vedantic ones, had to engage with its account of how we know.

Questions it answers

?How do we know something is true?
?What makes an argument valid or fallacious?
?Can right knowledge lead to liberation?

Key teachings

Editorial overview

Sixteen topics

The text opens by listing sixteen topics (padarthas), from the means of knowledge and objects of knowledge to types of debate and fallacies. Knowing them correctly is said to lead to the highest good.

Four pramanas

Nyaya accepts four means of valid knowledge (pramana): perception (pratyaksha), inference (anumana), comparison or analogy (upamana) and reliable testimony (shabda).

The structure of inference

Inference is set out in a five-member argument: thesis, reason, example, application and conclusion. The classic illustration is inferring fire from smoke on a hill.

Debate and fallacies

The text distinguishes honest discussion (vada) from debate aimed at victory (jalpa) and mere destructive criticism (vitanda). It classifies faulty reasons (hetvabhasa), quibbles and points of defeat.

Knowledge and liberation

Nyaya holds that false knowledge leads to faults, action, birth and suffering. Removing false knowledge through right knowledge unravels this chain and leads to liberation (apavarga).

Structure

Five books (adhyayas), each in two sections (ahnikas)

Important passages

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Nyaya Sutra 1.1.1The sixteen topics whose true knowledge leads to the highest good
Nyaya Sutra 1.1.3The four means of valid knowledge

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The text of the Nyaya Sutras is not part of this version. What you see here is an editorial overview with passage references. No verses have been reproduced or invented. The architecture is ready for the text to be added.

Concepts

Conceptप्रमाणPramana — means of valid knowledgeThe accepted sources of valid knowledge, such as perception, inference and testimony.Conceptज्ञानJnana — knowledgeLiberating knowledge — seeing reality and the Self as they are.Conceptमोक्षMoksha — liberationFinal freedom from bondage and the cycle of rebirth.Conceptआत्मन्Atman — the SelfThe innermost Self — what you are beneath body, mind and personality.ConceptदुःखDukkha — suffering, unsatisfactorinessSuffering, stress or unsatisfactoriness — the starting point of the Buddha's teaching and a shared concern of Indian thought.Conceptईश्वरIshvara — GodThe Lord — God as ruler, creator and object of worship.Conceptमनस्Manas — mindThe mind that receives, coordinates and desires — restless by nature.ConceptफलPhalaThe fruit or result of action.Conceptश्रद्धाShraddhaFaith or trust; confident commitment to a teaching, teacher or ideal.

Textवैशेषिकसूत्रVaisheshika SutrasSister school; Nyaya and Vaisheshika later merged into Nyaya-Vaisheshika Textमूलमध्यमककारिकाMulamadhyamakakarikaNagarjuna's critique of pramanas was one of the challenges Nyaya answered Textमीमांसासूत्रMimamsa SutrasMimamsa accepts a different list of pramanas

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.

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Traditions

न्यायNyaya

Source type: Primary source. Overview text on this page is editorial.