Prasaṅga
from 150 Nāgārjuna; the Prāsaṅgika school named for it from the sixth century
Refute the opponent entirely from their own premises, advancing no position of your own at any point — because having one would be the thing you are arguing against.
- Active
- from 150
- Where
- North India, later Tibet
- Also
- prasaṅga
- Status
- In use
- Tradition
- Non-Western procedures
What it is
Prasaṅga is reductio with a philosophical commitment attached. The arguer draws unacceptable consequences from the opponent's premises without ever asserting a thesis, and the refusal to assert is the point rather than a tactic.
The Madhyamaka position is that all positions depend on things having independent existence, which is precisely what the school denies. So a Mādhyamika who advanced a thesis would be refuted by their own argument. The method is what remains once positive assertion has been ruled out.
How it works
Take the opponent's premises exactly as they hold them. Derive a consequence they cannot accept. Assert nothing of your own — no counter-thesis, no alternative account, no premises brought from outside. Repeat for each position offered.
The internal dispute within Madhyamaka is precisely about whether this is enough. Bhāviveka held that one must also advance independent arguments; Candrakīrti held that doing so betrays the whole position, and the two wings of the school are named for that disagreement.
The form of the inference
- The opponent holds P
- From P, together with what the opponent also holds, Q follows
- The opponent cannot accept Q
- Therefore P is untenable, on the opponent's own terms
- No thesis has been advanced by the arguer at any point
The argument
Proposition The objection to the levy defeats the objector's own rate.
- The objector's premise, stated in their submission: a charge is invalid unless the benefit to the ratepayer can be individually quantified.
- On that premise, the emergency services levy is invalid, since no household's individual benefit from a fire service can be quantified until there is a fire.
- On the same premise, the objector's own road levy is invalid, since the benefit of a sealed road to a particular property cannot be separated from its benefit to every other user.
- On the same premise again, general rates are invalid entirely, since almost nothing the council provides is individually quantifiable.
- The objector's submission relies on those rates continuing, because it asks for the levy to be funded from general revenue instead.
Therefore The premise cannot be held, since it destroys the alternative the objection itself proposes — and this has been shown without any claim about what does make a charge valid.
No account of valid charging was offered, deliberately. Offering one would have shifted the argument onto that account's ground and away from the objector's premise, which is the whole discipline of the method.
What it is good for
Refuting a position when you have no settled position of your own, or when advancing one would concede something you do not want to concede. It is also the cleanest form of argument in adversarial settings, since it can only be answered by defending the premise.
Where it fails
The refusal to assert is very hard to sustain, and the school split over whether it can be. Deriving a consequence requires rules of inference and standards of what counts as unacceptable, and Bhāviveka's objection is that these are commitments — that a method with no commitments at all could not get started.
It also cannot build. A tradition that only refutes accumulates no positive account, and Madhyamaka's critics have pressed since the sixth century that the position is parasitic on the views it demolishes.
And like any reductio, it fails when the opponent accepts the consequence. If the objector above were willing to say that general rates are indeed invalid, the argument would have made their position more radical rather than untenable.
Common misconceptions
That advancing no thesis means believing nothing. The Mādhyamika holds a great deal; the claim is that what is held cannot be stated as a thesis about how things independently are, which is a much narrower and stranger position.
Where it came from
Nāgārjuna's practice in the second century. Buddhapālita follows it strictly, Bhāviveka objects, and Candrakīrti's defence in the seventh century establishes the Prāsaṅgika school.
What became of it
The dominant interpretation of Madhyamaka in Tibet, where the Prāsaṅgika-Svātantrika distinction became the central question of monastic philosophical education.
Lasting influence
It shapes Tibetan Buddhist philosophy entirely, and it is one of the few sustained attempts anywhere to argue without asserting.
Why it still matters
Alive in Buddhist scholarship and in any adversarial setting where conceding ground is costly.
Put another way
Dismantling a structure using only the tools found inside it.
Texts
Candrakīrti, Prasannapadā
The defence of pure consequence against Bhāviveka, and the text that gives the school its name.
Where to start
Read Nāgārjuna first with commentary, then the Prāsaṅgika-Svātantrika dispute. The order matters.
The surprising bit
A dispute about whether one may advance an independent argument became the organising question of Tibetan philosophical education for eight hundred years.
In their own words
If I had any thesis, that fault would apply to me; but I have no thesis, so there is no fault
Who held it
Buddhapālita
Connections
- Relies on
- Reductio ad absurdum, Catuṣkoṭi
- Parallel to
- Socratic elenchus
The verdict
The most disciplined refutation on this list, and unable to leave anything standing in place of what it removes.