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174 A Review of the Philosophy of Madhva [CH. limited to the idea, concept or kncwledge produced, without having reference to the presence or existence of any corresponding objective entity. It may be objected that in the case of the visual perception of an object, it is definite that it is produced by the object through sense-contact; but in the case of illusion of silver in the conch-shell the silver is really absent, and therefore it cannot have any sense-contact, and consequently no visual perception of it is possible. The answer given to this objection is that it is the affected visual organ that, being in contact with conch-shell, causes the rise of a cognition representing it as a piece of silver which did not exist at all?. It ought not to be argued, says Jaya-tīrtha, that, if there can be knowledge without an object, then no knowledge can be trustworthy; for as a rule knowledge is self-valid (autsargikam jñānānām prāmānyam). The self-conscious agent (sākşi) perceives and certifies to itself the validity of the mental states without the mediation of any other process or agent. This direct certitude or "belief as true," realized by ourselves in our capacities as conscie perceivers in every case where the knowledge produced is not affected or influenced by defects which cause mal-observation and non-observation, is what is understood as the self-validity of knowledge. In the case of an illusory perception (e.g., of a piece of conch-shell as silver) there is an appearance of one thing as another, and that this is so is directly perceived or felt (anubhava); had it not been that a piece of conch-shell was perceived as silver, why should a man who sought silver stoop to pick up the conch-shell? The illusory perception of silver does not differ in appearance from a case of a real perception of silver.
Jaya-tīrtha, in arguing against the Mīmāmsā view of illusion of conch-shell-silver as consisting of the memory of silver and the perception of conch-shell and the inability to distinguish between them, says that the appearance of silver in such cases has none of the characteristics of memory, and the activity generated by this false belief cannot be explained merely by the supposition of a non-distinction of difference between a memory-image and a visual percept. A mere negation involving the non-distinction of two entities cannot lead anyone to any definite choice. Moreover, if one
suktikā-sannikrşļam dustam indriyam tam eva atyantāsadrajatātmena avagrahamānam jñānam janayati. Nyāya-sudhā, p. 48.
? Ibid. p. 48.