- Length
- 288 pagesJha, The Nyaya-Sutras of Gautama with Vatsyayana's commentary, reprint of the 1912-19 translation
- Reading
- SpecialistWritten for a school and normally read with a commentary
- Availability
- Specialist pressIn print from an academic publisher, priced accordingly
Nyaya Sutras
India's logic and its theory of knowledge begin here, in a text so compressed that reading it means reading a commentary. Its four sources of knowledge and its rules for what counts as a demonstration became the common ground on which every Indian school afterwards had to argue, including the Buddhists who set out to demolish it.
- Date
- c. 200
- Attributed to
- Aksapada Gautama
- Region
- Northern India
- Language
- Sanskrit
- 1913 English, Ganganatha Jha With Vatsyayana's commentary; public domain Attested
- 1939 English, S. C. Vidyabhusana, rev. Sinha Widely reprinted Consensus
Where it stands in the argument
- Position
- Answered — Drew a named later reply, but was not itself a reply
- Form
- Sutra
- Method
- Sutra and commentary — A compressed root text carried by its commentary
- Transmission
- Continuous — Copied and read without a break in its own language
- Standing
- Live — Still argued in current philosophical work
The framework it established remained the shared vocabulary of Indian philosophical debate for fifteen centuries, used by schools that rejected everything else about it.
What the book says
The founding text of Indian logic, written as several hundred aphorisms so compressed that they cannot be read without a commentary - which is the intended design rather than a defect. It opens by listing sixteen topics whose correct understanding leads to liberation, and the first two do most of the work. The first is the means of knowledge, of which there are four and only four: perception, inference, comparison, and reliable testimony. Everything anyone claims to know must arrive by one of these, and a great deal of the text is spent showing that proposed fifth sources collapse into one of the four. The second topic is the objects of knowledge, which include the self, the body, the senses, mind, rebirth and suffering. The remaining topics are the machinery of debate: what a thesis is, what counts as a demonstration, what a legitimate objection is, and - set out at length and with evident relish - the ways an argument can be won illegitimately, the tricks, the false analogies, and the twenty-four varieties of futile rejoinder. The stated purpose of the whole apparatus is not victory but release: false knowledge produces attachment, attachment produces action, action produces rebirth, and correct reasoning cuts the chain at the first link.
What it argues
That knowledge has exactly four legitimate sources, that anything presented as knowledge can be tested by asking which of them delivered it, and that getting this right is not an academic matter but the condition of release from suffering. The account of inference is the technical heart: an inference is sound when the reason is genuinely present in the case at hand and is invariably accompanied by what it is supposed to prove, and the standard example - smoke on a distant hill establishing fire - became the stock illustration of Indian philosophy in the way the swan became the stock illustration of European induction. The text is also, unusually, a realist manifesto: the objects of knowledge exist independently, and the self is one of them.
What answered it
Nagarjuna, in a treatise devoted to the point: if nothing can be known without a means of knowledge, what establishes the means of knowledge? Either they establish themselves, which abandons the rule, or they need further means, which regresses. The Nyaya reply, developed over centuries, is that a lamp illuminates itself and other things, and that not every question about justification is a legitimate one. The argument was still being carried forward a thousand years later in the new school of Navya-Nyaya, which developed a technical language of extraordinary precision to conduct it.
How it argues
In sutras - statements compressed to the minimum number of syllables that can carry the meaning, designed to be memorised and then unpacked by a teacher. The form makes the text unreadable in isolation and durable across centuries, and it makes the commentary tradition an integral part of the work rather than a supplement to it. This is the section's clearest example of a form that is philosophically consequential: what the text means is partly a function of who is unpacking it.
The moment
A period of intense inter-school debate in which philosophical disputes were conducted publicly, sometimes before rulers, with real consequences for the losing side including the loss of patronage and occasionally of a monastery. The elaborate treatment of illegitimate debating tactics is not padding; it is a set of rules for a contest that mattered, written by people who had watched it be abused.
How it travelled
Continuously within India and almost not at all outside it until the modern period. The Nyaya tradition was unbroken from the sutras through Vatsyayana, Uddyotakara and Vacaspati Misra to the new logic of Gangesa in the thirteenth century, and it remained a living school of professional argument into the colonial era. European philosophy encountered it late; serious study in English dates from the early twentieth century, and the recognition that Indian logic is a parallel tradition rather than an approximation of Aristotle's is more recent still.
The strongest objection
Nagarjuna's regress, which the tradition never disposed of so much as learned to live with. The lamp analogy is elegant and not obviously an argument: a lamp does not need to be illuminated by another lamp, but it is not clear that a means of knowledge is like a lamp in the relevant respect, and saying so is the point at issue rather than the answer to it. The broader objection is that the four sources are asserted and then defended piecemeal, so that the framework's completeness - exactly four, no more - rests on the failure of proposed additions rather than on any positive argument.
Why read it
Not for pleasure, and not without a guide. Read it if you want to see an entire theory of knowledge built on assumptions different from the European ones and reaching conclusions that are recognisably about the same problems - and to see a philosophical tradition that took testimony seriously as knowledge two thousand years before anyone in the West did.
- First printed
- 1828
- First in English
- 1913
- Digitised
- Yes
Never read alone. Vatsyayana's commentary of about the fifth century is the standard companion, and the tradition of commentary on the commentary runs for a thousand years after it.
Ganganatha Jha's complete English of 1912-19 is out of copyright. The recent scholarly translations are in copyright and mostly cover selections.
Where it stands
Live as a subject of study and, more unusually, live as a resource. Contemporary work in epistemology has taken up the Nyaya account of testimony as a genuine source of knowledge rather than a shortcut to be justified by other means, which is a position the Western tradition largely lacked.
On quoting this book
The Sanskrit is public domain and Jha's English is too, but a sutra quoted without its commentary is unintelligible rather than pithy. Nothing is quoted.
Contested
The identity of Aksapada Gautama is unknown and the name may be conventional. The text is generally agreed to be composite, but which strata are early and which respond to Buddhist criticism is disputed, and the dating of the whole moves with that judgement. Whether the sixteen categories form a coherent scheme or are a list assembled from more than one source is argued. And the relation between the epistemology and the stated soteriological purpose - the claim that correct reasoning leads to liberation - strikes many modern readers as a join rather than an argument.