Rules of Debate and Grounds for Defeat in Ancient India

In India, important questions and controversial philosophical and religious doctrines were debated upon in public discussions from the earliest times. In the course of history one hears again and again about such arguments, in which important teachers advocated their opinion and defeated their respective opponents in verbal debate. Various attempts must have been made to describe how such arguments were to be held and which rules they should follow and when a debater could be considered the winner or loser in the verbal fight. Presumably, lists of rules for professional debate emerged in different schools and may have subsequently been collected into manuals on debating. However, such early manuals are not extant. Nevertheless, two sources, one of the most important medical works of the classical period, the Carakasamhita, and the first and fifth chapters of the fundamental text of the Nyaya school of philosophy, the Nyayasutra, can give us a picture of the rules which were to be observed in actual arguments and an indication of what handbooks or manuals of debate may have contained. The project will focus primarily on a comparison between the definitions and examples of the debate section of the Carakasamhita on the basis of selected manuscripts and the debate-related passages of the Nyayasutra together with its earliest commentary, Paksilasvamin`s Nyayabhasya (5 th c. A.D.). The overall objective of the project consists of a concise historical study and a comparison of the earliest sources of the positive directives for debating and the grounds for defeat in a debate, founded for the first time on a solid philological basis and including a systematic discussion of the earliest procedures of proof and refutation that were the starting point of later logical speculations in the different Indian philosophical traditions. The project will further consist of a historical survey of the interpretations of these grounds for defeat in the Nyaya tradition from the fifth to the eleventh centuries that looks at the four major commentaries, the other independent texts of the Nyaya tradition including a synopsis of the fragments of the so-called lost teachers of the Nyaya school. Additionally, it is also intended to study Cakrapanidatta`s interpretations of the debate-related topics in his Ayurvedadipika with regard to his knowledge of the Nyaya tradition in order to illustrate the logical and epistemological knowledge of twelfth century physicians in India.

In India, important questions and controversial philosophical and religious doctrines were debated upon in public discussions from the earliest times. In the course of history one hears again and again about such arguments, in which important teachers advocated their opinion and defeated their respective opponents in verbal debate. Various attempts must have been made to describe how such arguments were to be held and which rules they should follow and when a debater could be considered the winner or loser in the verbal fight. Presumably, lists of rules for professional debate emerged in different schools and may have subsequently been collected into manuals on debating. However, such early manuals are not extant. Nevertheless, two sources, one of the most important medical works of the classical period, the Carakasamhita, and the first and fifth chapters of the fundamental text of the Nyaya school of philosophy, the Nyayasutra, can give us a picture of the rules which were to be observed in actual arguments and an indication of what handbooks or manuals of debate may have contained. The project will focus primarily on a comparison between the definitions and examples of the debate section of the Carakasamhita on the basis of selected manuscripts and the debate-related passages of the Nyayasutra together with its earliest commentary, Paksilasvamin`s Nyayabhasya (5 th c. A.D.). The overall objective of the project consists of a concise historical study and a comparison of the earliest sources of the positive directives for debating and the grounds for defeat in a debate, founded for the first time on a solid philological basis and including a systematic discussion of the earliest procedures of proof and refutation that were the starting point of later logical speculations in the different Indian philosophical traditions. The project will further consist of a historical survey of the interpretations of these grounds for defeat in the Nyaya tradition from the fifth to the eleventh centuries that looks at the four major commentaries, the other independent texts of the Nyaya tradition including a synopsis of the fragments of the so-called lost teachers of the Nyaya school. Additionally, it is also intended to study Cakrapanidatta`s interpretations of the debate-related topics in his Ayurvedadipika with regard to his knowledge of the Nyaya tradition in order to illustrate the logical and epistemological knowledge of twelfth century physicians in India.