Marie-Helene Gorisse

In classical India, Jain philosophers developed a theory of viewpoints (naya-v¯ ada) according to which any statement is always performed within and dependent upon a given epistemic perspective or viewpoint. The Jainas furnished this epistemology with an (epistemic) theory of disputation that takes into account the viewpoint in which the main thesis has been stated. The main aim of our paper is to delve into the Jain notion of viewpoint-contextualisation and to develop the elements of a suitable logical system that should offer a reconstruction of the Jainas' epistemic theory of disputation. A crucial step of our project is to approach the Jain theory of disputa-tion with the help of a theory of meaning for logical constants based on argumentative practices called dialogical logic. Since in the dialogical framework the meaning of the logical constants is given by the norms or rules for their use in a debate, it provides a meaning theory closer to the Jain context-sensitive disputation theory than the mainstream formal model-theoretic semantics.

This paper explores the coexistence of more apologetic and of more systematic considerations in the _Āpta-mīmāṁsā_ (ĀMī), _Investigation on authority_, of the Jain author Samantabhadra (530–590). First, this treatise offers a relevant case study to investigate the transition from a conception in which the reliability criterion of an authoritative discourse is the authoritative character of its utterer, to a conception in which the criteria of validity and soundness of the discourse itself are foremost. Second, Samantabhadra is one of the first authors to undertake to logically prove the omniscience of the Jain teachers. And third, he links these questions to the celebrated Jain epistemological theory of non-one-sidedness.

The practice of rational debate between philosophers from different traditions, especially between Hindu—Naiyāyika and Mīmāṃsaka—, Buddhist and Jain philosophers, is unique in classical India. Around the 7th c., a pan-Indian consensus was achieved on what counts as a satisfactory justification. The core of such discussions is an inferential reasoning whose structure is such that it ensures that its conclusions are recognised as knowledge statements, irrespective of the obedience of the interlocutor. In this line, stories of conversion following those philosophical debates are commonplace in the narratives of the different traditions and regularly involve the conversion of a royal patron. Beside the influence of argumentative practices on social and political changes, theories of argumentation have deeply influenced the whole edifice of philosophy in pre modern India, since no philosopher can claim a thesis without being committed to defend it in this highly regulated dialogical framework. Moreover, the characterisation, as well as the methods to test the validity of this justification, raised the question of the existence of shared principles and was a battlefield for the different traditions to establish their own conceptions on the constitution of the world and on our ability to know it. The aim of this paper is to provide an overview of the contribution of the minority tradition that is Jainism to the framework of philosophical disputation in India.