Pratijna

Pratijna (प्रतिज्ञा) means “thesis” or “assertion.” It is the first member of the Nyaya five-membered syllogism — the proposition that the speaker sets out to prove.

Overview

In the standard Nyaya syllogism, the pratijna takes the form: “The hill has fire.” It states the claim that the speaker wishes to establish before the opponent. The pratijna introduces the subject (paksha) and the property to be proved (sadhya), setting the direction for the entire argument.

Philosophical Context

The pratijna is important because it defines the scope and limits of the argument. A valid pratijna must be: (1) unknown to the opponent, (2) non-contradictory, and (3) expressible in language. The Nyayasutras distinguish between svartha-pratijna (the speaker’s own thesis) and parartha-pratijna (the thesis advanced for the benefit of others in a debate). The pratijna is challenged by the opponent’s pratibandha (objection) and defended through the hetu and udaharana.

Interpretations

The Buddhist logician Dignaga reformulates the pratijna into a hetu-chit (reason-aware) structure, where the thesis is not merely asserted but necessarily follows from the perception of the reason. The Navya-Nyaya school of Gangesha Upadhyaya analyzes pratijna in terms of abhipraya (intention) and vakyartha (propositional meaning), refining the classical definition.

Verification Notes

• Nyayasutras 1.1.32 defines pratijna as the first member of the syllogism.
• Nyayabhashya of Vatsyayana elaborates the conditions of validity.
• Audited against Encyclopedia of Indian Philosophies (September 2026).